Answer:
Invasive species are among the leading threats to native wildlife. Approximately 42 percent of threatened or endangered species are at risk due to invasive species.
What structure in the heart keeps the blood from flowing in the right direction?
Answer:
The valves The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.
Explanation:
it is right hope this helps
Answer:
The answer is The valves The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.
Explanation:
i hope i helped you very much
There is a clear boundary where Earth's atmosphere ends and space begins.
True
Or
False
Answer:
The answer is False.
Explanation:
There’s really no clear boundary between where Earth’s atmosphere ends and outer space begins.Which contributes to the greenhouse effect?
The greenhouse effect is when the Sun's light is trapped into the lower atmosphere, heating up the planet. Carbon dioxide, or co2 makes up the majority of greenhouse gas emissions. Smaller amounts of methane(ch4), and nitrous oxide(n20) are also emitted. These gases are mainly emitted through the continuous use of fossil fuels such as coal, oil, and natural gas.
I answered but I got it wrong
please help ASAP
Answer:
Nitrogen gas the first one
Explanation:
Where is the atmosphere the least dense?
A. Layer 1
B. Layer 2
C. Layer 4
(see picture)
Answer:
layer 4
Explanation:
Which of the following is NOT a reactant
required to begin cellular respiration?
O ADP
O Glucose
O Oxygen
O Carbon dioxide
Answer:
ADP is not a reactant required to begin cellular respiration
What are nonrenewable resources?
They are abundant natural resources that humans do not have to recycle or reuse.
They are natural resources that are in abundant supply or that can replenish themselves.
They are natural resources that are in limited supply and can easily run out.
They are artificial resources that humans use but are not able to be recycled or reused.
Answer:
Your answer is: They are natural resources that are in limited supply and can easily run out.
Explanation:
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. An example is carbon-based fossil fuels. Hope this helped :)
what is a Cell??
please help
Answer:
A cell is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. :) hope that helps!
Answer:
a cell are small things that are all around us, basically everything is made up of cells. cells are made of of one or more atoms/ molecules
PLEASEE HELP PLEASEEE
THANK YOU IF YOU DO!
Cones and flowers are the principal reproductive organs in vascular plants. However, successful reproduction is also dependent on roots, stems, and leaves as well. Evaluate each claim. Select ALL the statements that accurately describe the interplay between organ systems.
A) Fruits work with leaves to produce sugars using photosynthesis.
B) Nutrients needed for reproduction are absorbed from the soil from the root system. C) Nutrients absorbed through the roots are transported to the flowers via the xylem. D) Pollen necessary for reproduction is made in the leaves and transported via phloem.
E) Fruits contain large amounts of sugars produced in the leaves through photosynthesis.
Answer:
B) Nutrients needed for reproduction are absorbed from the soil from the root system.
C) Nutrients absorbed through the roots are transported to the flowers via the xylem.
E) Fruits contain large amounts of sugars produced in the leaves through photosynthesis.
Explanation:
(A) Is wrong the fruit of the plant does not produce Sugars but stores it.
(D) Is wrong because is not made from the leaves but from the Cones of the plant the question tells you this.
Farmers who use genetic engineering to grow pesticide-resistant crops: a. waste irrigation water from runoff b. need to frequently till the soil to reduce weed growth c. reduce the use of petroleum and energy d. contribute to soil depletion e. decrease the nutrient content of foods
Farmers who use genetic engineering to grow pesticide-resistant crops contribute to soil depletion. Soil pollution is driven by many elements , with some naturally-occurring, while human action cause others.
What is causing soil depletion?
Soil pollution is driven by many elements , with some naturally-occurring, while human action cause others.
The ultimate causes of soil pollution are wind and water erosion, deforestation, and urbanization.
Thus, option "D" is correct, contribute to soil depletion.
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Atoms are the smallest unit
into which matter can be
divided. They can be joined
together to form molecules,
which in turn form most of
the objects around you. In
what ways are cells similar
to atoms?
Answer:
Cells and atoms both work together to be a physical shape
Explanation:
You are made up of cells much as say a fridge is made up of atoms. The cell is also broken down into several parts such as the mitochondria, vascoles, and the smooth endoplasmic reticulum.
The magnets point North when the Earth's magnetic field has (p2)
need some help :)
The magnets point North when the Earth's magnetic field has?
ANSWERI think the best answer for this question is Magnetic Reversal or Geomagnetic Reversal.
In geomagnetism, the term "geomagnetic reversal" also known as 'flip', is the process by which the North pole becomes South pole and the South pole transforms into North pole.
THE MAGNETIC REVERSALThe reversals happen on rare occasions when iron molecules start moving towards the opposite direction as other iron molecules around them within the Earth's spinning outer core.
What process do scientists think explains the evolution of mitochondria and chloroplasts from bacteria
Scientists put their conclusions into this by creating th Endosymbiotic theory. The endosymbiotic theory describes how mitochondria and chloroplasts (cell organelles) came to exist in eukaryotic organisms. The endosymbiotic theory explains the evolution of mitochondria and chloroplasts. Before mitochondria and chloroplasts were organelles in a cell, they were free prokaryotic cells that were absorbed by eukaryotic cells.
The mitochondrion was originally a prokaryotic cell that could undergo aerobic respiration. After being absorbed by a eukaryotic cell, it developed a symbiotic relationship with its host cell.
The chloroplast was originally a prokaryotic cell that could undergo photosynthesis (eg. cyanobacteria). Like the mitochondria, the photosynthesizing bacteria became dependent on the host cell after being engulfed.
There is much evidence to support the endosymbiotic theory.
Both prokaryotes and chloroplasts/mitochondria have circular DNABoth have their own ribosomesBoth divide through binary fission (splitting into two)Both have their own cell membranesThe difference between an individuals' assets and income is
Answer:
Income: The money that comes in. Assets: Property owned by an individual and/or company that has value.
Explanation:
An easy way to remember income! Income: What's coming into you. Assets: Stuff you own and/or can make a profit out of
Describe the purpose of cell differentiation in embryonic development.
Answer:
The differentiation of cells during embryogenesis is the key to cell, tissue, organ, and organism identity. Once an egg is fertilized by a sperm, a zygote is formed. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation
Explanation:
A normal polypeptide includes the following sequence of amino acids. (Note: Each
amino acid is named by a three letter abbreviation.)
Iso-Leu-Pro-Val-His-Ser-Thr-Met
After a mutation, the amino acid sequence becomes the following:
Iso-Leu-Pro-Val-Tyr-Arg-Iso-Gly
Which of the following changes to a nitrogenous base in mRNA is most likely to
have occurred?
The messenger RNA (mRNA) is not found here but it is possible to find the correct amino acid sequence by using the genetic code.
What is the genetic code?The genetic code can be defined as a series of instructions to convert a DNA sequence to a protein sequence.
The mRNA is composed of triplets of nucleotides called codons that specify different amino acids during translation.
In conclusion, the mRNA sequence is not found here but it is possible to find the correct amino acid sequence by using the genetic code.
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In general, the probability of flooding decreases when there is an increase in the amount of
1) infiltration
2) Snow melt
3) runoff
4) precipitation
Flooding is a natural disaster that is caused due to overflowing water. The possibility of flooding decreases when there is an increase in infiltration. Thus, option 1 is correct.
What is infiltration?Infiltration is the process of Hydrology where the water on the upper layers or the ground moves and sweeps inside the soil through permeability or filtration. The soil shows the property of infiltration allowing the water to move through the different soil profiles.
The greater the infiltration property of soil the greater it will absorb the groundwater into it. This will decrease the case of flooding as no water will get deposited on the ground. It will raise the water level of the table and decreases the water pooling at the surface.
Therefore, option 1. an increase in infiltration, decreases the flooding.
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could anyone help me pls would appreciate it
Answer:
I'm sure it's none of the above. The planting method where seeds are placed on top of a peak is called Hand Sowing.
Use the drop-down menus to complete the hypothesis of the first
group of researchers.
During a drought, the decrease in rainfall will reduce the amount of
vegetation that can grow and increase the occurrence of natural fires,
so an elevation in Select...
and a reduction in
Select...
should be found in the cores.
Select...
charcoal
pollen
sediment
wetland plants
Answer:
charcoal is found in the cores
In what part of the renal tubule does most reabsorption of substances occur?.
Answer:
The proximal convoluted tubule.
Explanation:
What type of rocks will likely weather the least?
Answer:
Igneous rocks are the least likely to weather or erode because of their solidity, therefore making them more resistant to water.
Humans increase carbon dioxide (CO,) in the atmosphere, and contribute to the carbon eycle by
A. combustion from driving cars.
B) planting trees to improve photosynthesis.
C. conserving energy with alternative energies.
D. using more solar power electricity.
I think it's { A.) Combustion from driving cars} But if I am wrong I am sorry. Good luck!
Which of these changes is a possible negative consequence of farmers
allowing livestock to
overgraze a pasture?
O A. Abundance of clean air
O B. Deforestation
• C. Desertification
• D. Shortage of freshwater
Answer:
C
Explanation:
The overgrazing causes dry land which is arid
Which form of Vitamin A is involved in the growth and differentiation of epithelial cells throughout the body
Answer:
It is an essential vitamin for vertebrates, including humans. Vitamin A (retinol) and its metabolites serve as essential molecules in vision and influence gene expression in various types of cells, particularly epithelial cells.
Explanation:
what do the letters A G C andT stand for
How long does it take for food to digest in your body?
Answer:
six to eight hours
Explanation:
your welcome
Explanation:
It takes about six to eight hours
Tsunamis are so destructive because of their ___ and ___.
size, speed
density, size
speed, shape
Answer:
A. Size and Speed
Explanation:
:)
After eating a large meal, which branch of your nervous system is activated?.
Answer:
The parasympathetic nervous system is activated after eating a large meal
Visceral reflex arcs differ from somatic in that ________. visceral arcs involve two motor neurons visceral arcs contain two sensory neurons visceral arcs do not use integration centers somatic arcs contain one additional component that visceral arcs do not possess
Visceral reflex arcs differ from somatic in that : ( A ) Visceral arcs involve two motor neurons
Visceral reflex arcsVisceral reflex arc is the reflex arc in the autonomic nervous system that produces non-skeletal muscular response in certain internal organs ( heart and blood vessels ). While somatic reflex arc is a neutral pathway which occurs from the sensing to response of stimulus.
Hence we can conclude that Visceral reflex arcs differ from somatic in that : ( A ) Visceral arcs involve two motor neurons.
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Ability would provide the octopus an advantage in its environment
Answer:
It has the ability to change its color and texture to blend into its environment
Explanation: