first invertebrates to develop a true nervous system​

Answers

Answer 1

Answer:

Coelenterates are the first invertebrates to develop a true nervous system.


Related Questions

if a red plant is crossed with a white plant and the offspring is pink, what is it called ?

Answers

Answer:

Incomplete dominance is an example of a non-mendelian trait (doesn't follow the genetic rules established by Gregor Mendel). When two parents mate and produce offspring, the offspring is a blend of the two parents. So, a red flower and a white flower would make a pink flower.

please help me with this i’ll give brainlist

Answers

Answer:

(a) base

none of the other make sense

it’s b- revolving nosepiece

the base is lower on the microscope

HELP PLEASE!! it’s about nutrition!!

Answers

Answer:

I think it's (C) I had a question about this awhile back. But it's been awhile so I could be wrong

Have a great day!

Explanation:

What are the four different variations of bacteria?

Answers

Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes). They can exist as single cells, in pairs, chains or clusters. Bacteria are found in every habitat on Earth: soil, rock, oceans and even arctic snow.

What make Eukaryotic cells different from Prokaryotic Cells?

Group of answer choices

Eukaryotic cells have membrane bound organelles and more complex structure

Eukaryotic cells do not have a nucleus and are unicellular

Eukaryotic cells all have cell walls and include bacteria and plants

Eukaryotic cells are mainly bacteria

Answers

Answer:

Eukaryotic cells have a membrane bound organelles and more complex structure

Explanation:

Which of the following is an extremely dense form of connective tissue?

Answers

Answer:

the breast tissue

Explanation:

Tendons and Ligaments are the extremely dense form of connective tissue.

What are dense connective tissues?

Dense connective tissue is also known as dense fibrous tissue which is a form of connective tissue composed mostly of fibers. These fibers are made of type I collagen which are rows of fibroblasts, the fiber-forming cells that make up the fibers, filled in between the collagen strands.

Tendons and ligaments are strong, rope-like structures which is formed by dense connective tissue where tendons connect skeletal muscles to bones, while ligaments connect bones at joints.

Ligaments have more elastic fibers which are more extensible than tendons. This connective tissue is found in the lower layers of the skin known as Dermis, where it is structured in sheets.

Thus, Tendons and Ligaments are the extremely dense form of connective tissue.

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HELP WILL GIVE BRANLIEST

Answers

Answer:

Respiration removes oxygen from the atmosphere, and photosynthesis puts oxygen into the atmosphere.

Explanation:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

Which of the following is an example of how electrical energy can be generated?

Answers

Answer:

C I guess..

Explanation:

becuse water currents are used to generate electricity...

Wind turning a tightly wound coil inside a magnet is an example of how electrical energy can be generated.

What is an example of electrical energy?

As the charges that cause the energy are moving, electrical energy is a form of kinetic energy. Lightning, batteries, and even electric eels are examples of electrical energy in action.

What can generate electrical energy?

Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy. Other major electricity generation technologies include gas turbines, hydro turbines, wind turbines, and solar photovoltaics.

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1. Convection current causes the lithospheric plate to
A. move slowly but constantly
B. move faster
C. move in any direction
D. create another plate

Answers

ANSWER:

B. MOVE FASTER.

______________________

HOPE IT HELPS YOU

CAN YOU BRAINLEST ME

Answer is B.
Move faster.

Red bone marrow only differs from yellow bone marrow because of a difference in the amount of which substance?
the amount of antibody
the amount of cytokine
the amount of antigen
the amount of fat

Answers

Answer:

The amount of fat

Explanation:

There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets. Yellow marrow is made mostly of fat.

Answer:

the amount of fat

Explanation:

took the test :)

Have you ever saved someone's life?

Answers

Answer:

yes a cats live I saved her because a truck almost hit her

★ « Have you ever saved someone's life? »

I'm being honest and my answer is no because no one's life is in danger befor

Biology 3.01
1. What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell?

Answers

Answer:

chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.

Explanation:

Answer:

chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.

Explanation:

BRAINLIEST FIR RIGHT ANSWERS, WHAT SHAPE AND WHY?
4. Hydrogen cyanide (HCN) is a colorless gas. It is poisonous and smells like
almonds. On a piece of scratch paper, draw a Lewis structure for this compound. (you
do not need to show the picture)
Using that drawing, explain what shape you think this molecule is and WHY you
think it would be this shape. (4 points)
it would be an oval because the
A/
ORI

Answers

Answer:

Explanation:

Hydrogen cyanide (HCN)

The molecular geometry of HCN is linear. The compound is polar in nature.

As Carbon is bonded to two atoms, it follows the molecular geometry of AX2. And as per VSEPR theory, molecules covered under AX2 have a linear molecular geometry.

Hence Hydrogen Cyanide has linear molecular geometry.

why fertilizer is important​

Answers

Answer:Fertilizers provide crops with nutrients like potassium, phosphorus, and nitrogen, which allow crops to grow bigger, faster, and to produce more food. To grow, plants require nitrogen compounds from the soil, which can be produced naturally or be provided by fertilizers.

Explanation:

What is a nonrenewable resource?(1 point)

a resource that is in limited supply


a resource that is used for energy


a resource that harms the environment when it is used


a resource that can replace itself quickly

Are all rocks made up of one mineral?(1 point)

No. If it contains more minerals, however, then it is not useful to people.


Yes. If it contains more minerals, then it would lose its orderly internal structure.


No. Some rocks may contain several minerals.


Yes. If it contains more minerals, then it is an ore.


Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?(1 point)

No, coal is not a mineral because coal is made of dead plants.


No, coal is not a mineral because coal can be burned to produce electricity and heat.


Yes, coal is a mineral because all rocks that are useful to people are minerals.


Yes, coal is a mineral because all rocks are nonliving solid minerals.

Which is a positive aspect of fossil fuels?(1 point)

They are ecologically friendly.
.

They can be recycled and reused.


They provide energy for cars, trains, and heat.


They do not need processing to produce energy.

Which is a negative aspect of fossil fuels?(1 point)

They take a long time to produce energy.


They are difficult to find.


They cause pollution on Earth.


They are difficult to transport.

Which is a disadvantage of solar power?(1 point)

It requires turbines.


It can be harmful to wildlife.


It requires burning fuel, which causes air pollution.


It can only be used where there is lots of sunlight.

Which is a thick, sticky, tar-like deposit of bitumen mixed into sandy sediment?(1 point)

shale


sandstone


oil sand


coal

Which statement best explains an environmental outcome of using fossil fuels for energy?(1 point)

When fossil fuels are burned, hazardous ash is created and carried through the environment by wind and dropped into nearby lakes and ponds.


Fossils fuels produce waste that exposes humans to dangerous levels of radiation.

When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming.


Fossil fuels release carbon dioxide which plants use to make food.


Why is soil considered a vital resource?(1 point)

It is hard to destroy and easy to make.


It provides the source of material for different landforms.

It plays a variety of roles for plants and animals.


It is the place where all nutrients on Earth are stored.


Which describes a renewable energy resource?(1 point)

It is more prone to serious accidents.

It is less expensive than fossil fuels.


It produces less pollutants than fossil fuels.

It consists of carbon and hydrogen molecules.

Use the scenario to answer the question.

Edwin buys a water bottle, reuses it twice, and then recycles it. Eleanor buys a water bottle, reuses it twelve times, and then throws it away.

Which energy cost would apply to Edwin, but not to Eleanor?

(1 point)

the cost of transporting the bottle away from the house


the cost of processing the bottle after it was no longer used


the cost of producing the original bottle


the cost of transporting the bottle to the store



Your class goes on a field trip to observe drilling machinery. The geologists at the drill site show you displays of drilled rocks to compare different types of drills and methods. The drilled holes in one rock display are significantly larger than the holes drilled in the display next to it. Given this information, which statement is correct? (1 point)

The rock display with larger holes shows petroleum drilling, which is deep underground.


The rock display with smaller holes shows petroleum drilling, which is closer to the surface.


The rock display with smaller holes shows copper drilling, which is deep underground.


The rock display with larger holes shows copper drilling, which is closer to the surface.

Answers

Answer:1).A nonrenewable resource is a natural substance that is not replenished with the speed at which it is consumed. It is a finite resource.

2)Rocks are made of minerals, like quartz, calcite, feldspars, and micas. Most rocks are made from more than one mineral, but there are quite a few kinds that are made from only one mineral. Minerals are not rocks, rocks are made of minerals.

3)Coal is a very useful rock that formed over millions of years from the ... No, coal is not a mineral because coal is made of dead plants.

4)The relatively cheap cost of fossil fuels is a major positive aspect. They are in abundant supply, which makes them inexpensive to drill or mine for. In particular, coal is one of the most widely available fossil fuels.

5)High initial costs for material and installation and long ROI (however, with the reduction in the cost of solar over the last 10 years, solar is becoming more cost feasible every day) Needs lots of space as efficiency is not 100% yet. No solar power at night so there is a need for a large battery bank.

6)Asphalt, also known as bitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or it may not.

7)When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming.

8)The soil considered an important resources because : It provides food through agriculture. It is the source of nutrients for many forms of life. Many valuable minerals are explored from the soil.

9)Renewable resources are an energy source that cannot be depleted and are able to supply a continuous source of clean energy.

10)the cost of processing the bottle after it was no longer used

11)The rock display with smaller holes shows copper drilling, which is deep underground.

Explanation:

Those resources which can not be made again is called nonrenewable resource.

According to the question,

A resource that is in limited supply is nonrenewable resources.A resource that is used for energy is a renewable resource. For example - sunlight.A resource that harms the environment when it is used, might be both renewable and nonrenewable resources.A resource that can replace itself quickly is renewable resources. Asphalt, also known as bitumen is sticky, it is present in all rock7When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming. The soil considered an important resource because It provides food through agriculture. It is the source of nutrients for many forms of life. Many valuable minerals are explored from the soil. Renewable resources are energy sources that cannot be depleted and are able to supply a continuous source of clean energy. The cost of processing the bottle after it was no longer used The rock display with smaller holes shows copper drilling, which is deep underground.

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What does mRNA do?

1. carry
carry coded message from the genes to the ribosomes where proteins are built
2. carry amino acids to the ribosomes
3. make up ribosomes
4. help with RNA splicing

Answers

Answer:

The answer is 1. Carry coded message from the genes to the ribosomes where proteins are built.

Explanation:

mRNA stands for messenger RNA, so 1 would be correct.

Hope this helps!!

Please hurry its timed

Answers

Answer:

I feel like its combustible

Population Dynamo
1
A population of alligators lives in a wetland habitat. Which of these describes a density-dependent factor that could affect this
population?
OA. A drought that lasts for several months occurs.
ОВ.
A hurricane passes through the area.
OC. Humans introduce pollutants into the water of the ecosystem.
OD
There is a decrease in prey animals in the ecosystem.
Reset

PLEASE NEED HELP
Submit

Answers

Answer:

D) there is a decrease in prey animals in the ecosystem

Explanation:

a density dependent factor is one of the following:

dieses

competition

predation

only one makes sense answer is D)

Explain why energy from the sun is essential for the cycling of nutrients

Answers

Answer:

light energy is needed in photosynthesis or else the plant will die. no light no starch no starch no life rip

PA answer plss
Tama o Mali
1.nang bubbly NG kapwa

Answers

Answer:

mali

Explanation:

masama po ang mang bully ng kapwa natin

Answer:

*bully?? Mali,kase di dapat binubully Yung kapwa

what are the problems encountered during the conduct of the activity in sensory evaluation?


can anyone answer it please..​

Answers

Answer:

Sensory Evaluation

Sensory evaluation defined as the ‘systematic study of human response to physico-chemical properties’ makes it possible to obtain information about the sensitivity of the human sense and about the four dimensions of the sensory perception, i.e. the quantitative, the qualitative, the temporal and the hedonic dimensions.

What categories are lymphocytes classified into? (Choose all that apply)
B cells
A cells
NK cells
T cells

Answers

Answer: A Cells & NK Cells

Explanation: Well, the A Cells are a mass of cytoplasm that is bound externally by a cell membrane, and NK Cells are innate immune cells.

Answers confirmed by Buzz (Acceleration Education)

Hope this helps! & Please Give Me Brainliest that would help me a lot.

Lymphocytes classified into:-

B cellsNK cellsT cells

What are the function of lymphocytes?B-cells are stimulated by an antigen, they proliferate and transform into plasma cells, which produce specific antibodies.T cells includes delayed hypersentivity reactions.It help in graft rejection, graft-versus-host reactions, defense against intracellular organisms, and probably defense against neoplasms.

What are lymphocytes?A lymphocyte is a type of white blood cell in the immune system of most vertebrates. Lymphocytes include natural killer cells, T cells, and B cells. They are the main type of cell found in lymph, which prompted the name lymphocyte.

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Explain why amylase will not speed up the breakdown of proteins

Answers

Answer:

Amylase will not speed up the breakdown of proteins because it is the enzyme used for the breakdown of carbohydrates. Its active site will not fit the substrate of a protein molecule. To speed up the breakdown of proteins, protease is used insted.

If a liquid turns into a solid, what is happening to the energy in the liquid?

Answers

or the liquid maintains it's energy

Which of the following correctly orders events during mitosis?


a) Microtubules organize the chromosomes. The nuclear membrane dissolves. The mitotic spindle attaches to chromosomes.


b) The nuclear membrane dissolves. Microtubules organize the chromosomes. The mitotic spindle attaches to chromosomes.


c) The nuclear membrane dissolves. The mitotic spindle attaches to chromosomes. Microtubules organize the chromosomes.


d) The mitotic spindle attaches to chromosomes. Microtubules organize the chromosomes. The nuclear membrane dissolves.

Answers

The answer option which correctly orders events during mitosis is: D. The mitotic spindle attaches to chromosomes. Microtubules organize the chromosomes. The nuclear membrane dissolves.

Mitosis can be defined as a type of cell division (duplication) through which a single or one (1) parent cell produces two (2) genetically identical daughter cells.

In Biology, duplication division refers to a process in which two (2) genetically identical daughter cells produced by one (1) parent cell have the same number of chromosomes as their parent cell.

Furthermore, the correct order (sequence) of events during mitotic division in living organisms include the following:

1. The mitotic spindle (spindle fibers) of microtubules attaches to chromosomes.

2. The chromosomes found in a sex cell are organized by microtubules.

3. The nuclear membrane is then dissolved.

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Answer: it is b

Explanation:

A person jogging from the forest to the office covers the 6,800
meters in 2 hours. Their speed is not constant and they slow down
and speed up at various times. What is their average velocity?
Round the answer to the hundredths place if necessary.
a 1.9 m/s north
b. Impossible to calculate since the speed wasn't constant.
C. 0.9420/s north
d. 56.67 m/s north
e. 1.34 m/s north
f. 0.56 m/s north

Answers

Total displacement=6800mTime=2h=7200s

[tex]\\ \sf\longmapsto Avg\: Velocity=\dfrac{Total\: displacement}{Total\:time}[/tex]

[tex]\\ \sf\longmapsto Avg\: Velocity=\dfrac{6800}{7200}[/tex]

[tex]\\ \sf\longmapsto Avg\: Velocity=0.9420m/s[/tex]

Answer:

0.9420m/s north

Explanation:

Given,

Displacement (Total) = 6800 metres(m)

Time = 2 hours

We need to convert hours to seconds.

2 hours = 7200 seconds

We know,

[tex]\sf\longmapsto \: Average \: velocity = \frac{Total \: Displacement}{Total \: time} [/tex]

Let's start solving!

[tex]\sf\longmapsto \: Average \: velocity = \frac{6800 \: metres}{7200 \: seconds} [/tex]

[tex]\sf\longmapsto \: average \: velocity = 0.9420\: m/s[/tex]

HELP NEED ANSWER IN AT LEAST 5 MINUTES.
Which of the following criteria do scientists use to classify something as living? O Reproduce O Made of one or many cells O Grows All of the above​

Answers

Answer:

Reproducir

Explanation:

Giving brainlest to correct answer!!!! :D

Answers

It’s the first one it modifies packages and transports the lipids and proteins.

What are the causes of antibiotic resistance?

Answers

Answer:

Over-prescription of antibiotics.

Patients not finishing the entire antibiotic course.

Overuse of antibiotics in livestock and fish farming.

Poor infection control in health care settings.

Poor hygiene and sanitation.

Explanation:

when you open a solid room air fresher the solid slowly loses mass and volume. how do you think this happens

Answers

Because the air freshener is being released out in to open, so it spreads everywhere.
Hope that helps :)
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write two examples of machine which changes the direction of force what is the time difference between san antinao texas and new york state A biased coin has a probability of 0.4 of coming up heads. What is the probability that when flipped one hundred times it comes up heads half of the trials or more. Give answer to at least three decimal points. Amelie found the solutions of the equation x^2-x=42 to be 6 and -7. Explain why this answer is incorrect. Then, find the correct solutions. A writer should use a(n) pronoun to show ownership. Give me 20 facts about the documentary Super Size Me 2 How did Thomas Paine view the American lands how many atoms are in the moon?? The total temperature measured by 3 thermometers was 15 degrees Fahrenheit.What was the average temperature measured by the 3 thermometers? PLEASE HELP ME SO I CAN GRADUATE!!!!!What is the y-intercept of the line passing through the point (4,-5) with a-2slope of ?A.419OB.OOD.499 1.does bass drum is ?a.aerophone b.chordophone c.idiophone d.membrophone 2.Nose flute is?a.aerophone b.chordophone c.idiophone d.membrophonei need help What cross-section do you get when you give a horizontal cut to a die? The Chapter is Visualising solid shapes. what is social emotional learning in the classroom crivez les phrases ci-dessous au futur proche.1. Je marche sur la plage. =2. Tu reois des cadeaux. = 3. Futur proche4. Il fait froid. = 5. Elle prend le bus. = 6. On danse ce soir. =Nous visitons la France. = 7. Vous mangez une pizza. = 8. Ils boivent de l'eau. =9. Elles rflchissent. = Choose exactly 3 answers that are correct.Family members deny that there is a problem.Family members make the alcoholic comfortable with the behavior.Family members blame themselves.Family members take care of their own needs. What is the value of 5 in 102,587? What theme does Whitman develop in poem 6 of Song of Myself?Though tragic, death is an opportunity to reflect on meaningful memories.Life has no real beginning or end; instead, it is a continuous circle.With a positive attitude, the most challenging obstacles can be overcome.Young people are a reminder to remain curious and imaginative. Jonas is building a fence around his square garden. The area of his garden is 181 ft2. Jonas needs to determine the length of each side. Which number line best represents a graph for the value of 181? The next activity will help you sum up the strengths and changes you discovered as you age. You will also identify the appropriate or correct behaviors in valuing yourself. Copy the table below on a clean sheet of paper and fill in the needed information. Examples are given below: please help What is the LCD of - and -? 15 x 8 n 15 nx 75 x