Scientists have found ash in certain layers of sediment in an area in northern China. This is evidence that a volcano erupted in the area in the past. In the same sedimentary layers, fossils of dinosaurs, birds, and early mammals have been found. How can scientists best determine when the volcano erupted?

Answers

Answer 1

Scientists can find out when the volcano erupted by determining the age of the fossils in the ashy layers of sediment in area.

What is a Volcano?

This is defined as a vent or opening where lava erupts on to the surface of the Earth.

The age of the fossils in the ashy layers of sediment in area will help to determine the time when the volcano erupted.

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Related Questions

Using the drop down menu, complete the last column of the Punnett Square.


please help

Answers

Answer:

top right is bb and bottom right is Bb

Explanation:

I took the test

.In a population of a reptile species bred in captivity, a gene that controls a particular observable trait has only two alleles. The p allele expresses complete dominance over the q allele. If q is artificially selected against through selective breeding, which of the following best represents how the frequencies of p and q would change over time?

Answers

Answer:

d

Explanation:

What differences would you expect to observe between an igneous intrusion into sedimentary rock and an igneous rock where sedimentary rock had formed on top of it?

(that is the question- there are no ABC answers. this isn't on eguenity)

Answers

I'm not sure, sorry.

I would recommend asking a trusted adult or teacher.

The components of an environment that support its organisms are called its ____________ , and include light, water, food, mates, and ____________ .

Answers

It’s habitat. And protection

What is this suffering ? ( Think back to the gospels ( see Luke 22:47-23:49))

Answers

Answer:

While he was still speaking a crowd came up, and the man who was called Judas, one of the Twelve, was leading them. He approached Jesus to kiss him, 48 but Jesus asked him, “Judas, are you betraying the Son of Man with a kiss?”

49 When Jesus’ followers saw what was going to happen, they said, “Lord, should we strike with our swords?”(B) 50 And one of them struck the servant of the high priest, cutting off his right ear.

51 But Jesus answered, “No more of this!” And he touched the man’s ear and healed him.

52 Then Jesus said to the chief priests, the officers of the temple guard,(C) and the elders, who had come for him, “Am I leading a rebellion, that you have come with swords and clubs? 53 Every day I was with you in the temple courts,(D) and you did not lay a hand on me. But this is your hour(E)—when darkness reigns.”(F)

1 point
*
What is the domain?
Archaea
Bacteria
Eukaryota

Answers

Explanation:

Both Bacteria and Archaea are prokaryotes, single-celled microorganisms with no nuclei, and Eukarya includes us and all other animals, plants, fungi, and single-celled protists – all organisms whose cells have nuclei to enclose their DNA apart from the rest of the cell.

The maximum plasma concentration of a substance that can be carried in the blood without eventually appearing in the urine is called the

Answers

Answer: renal threshold

Explanation:

The maximum plasma concentration of a substance that can be carried in the blood without eventually appearing in the urine is called the renal threshold.

The renal threshold refers to the maximum concentration of a substance in the blood plasma that can be filtered by the kidneys without being reabsorbed and eventually appearing in the urine. It is a critical concept in renal physiology and is specific to each substance.

When the plasma concentration of a substance exceeds its renal threshold, it surpasses the kidney's capacity to reabsorb it, resulting in the substance being excreted in the urine. Below the renal threshold, the substance is effectively reabsorbed by the renal tubules and remains in the blood.

The renal threshold varies depending on the substance and can be influenced by factors such as renal function, hormonal regulation, and overall health. Monitoring the renal threshold of certain substances can be clinically relevant in assessing kidney function and diagnosing certain conditions, such as renal tubular disorders or diabetes.

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What is the name of the structure indicated by the question mark on this transverse cut of the developing embryo

Answers

The name of the structure indicated by the question mark on this transverse cut of the developing embryo is the neural tube. This is further explained below.

What is a neural tube?

Generally, The neural tube is simply defined as the facilitator of the central nervous system

In conclusion, the neural tube is the brain and the spin.

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Why tomatoes are red in colour??​

Answers

Answer:

The color of a tomato begins to change as it ripens, from green to yellow, and ultimately to red. This is due to the breakdown of chlorophyll, which results in the formation of lycopene, a red carotenoid (a pigment group). When the tomato is fully ripe, the carotenoid becomes the predominate color, which is red.

On the periodic table, what is the name
of the column of elements including
helium and neon?

Answers

Answer:

Noble gases

Explanation:

Because they're stable or rather they're unreactive.

Answer:

Noble gases

Explanation:

trust me, im right

When is ozone considered a pollutant? a. in the stratosphere b. in the mesosphere c. in the troposphere d. in the thermosphere please select the best answer from the choices provided a b c d

Answers

Answer:

in the troposphere

Answer:

c. in the troposphere

Explanation:

correct ed2022

What’s at the bottom of a black hole?

Answers

Pressure is at the bottom a black hole is kind of like a vacuum think about an air look it uses pressure

Answer:

At the bottom of every black hole is a singularity where space and time stops and where there is infinite mass and gravity, where no one can ever reach.

Explanation:

Hope it helps!!

the combination of two forces exerted in opposite direction is what
A. sum of the two forces
b. difference between the two forces
c. product of the two forces
d. ratio of the two forces​

Answers

Answer:

difference between the two forces option B is the correct answer of the statement

What is a normal distribution of phenotypes

Answers

Answer:

ima be honest i did not know so i had to look it up so i hope this helps?

Explanation:

Terms in this set (9)

normal distribution the frequency is highest for the the middle, or mean phenotype, and lowest for the ends, or extreme phenotypes

what phenotype has the greatest frequency in a trait that follows a normal distribution? ...

microevolution the observable change in the allele frequencies of population over time

what is a function of cardial muscle​

Answers

pumping blood throughout the cardiovascular system

Helicobacter pylori can grow in the stomach because it invades epithelial cells. hides in macrophages. makes a capsule. possesses an enzyme that neutralizes HCl. makes HCl.

Answers

Helicobacter pylori can grow in the stomach because it invades epithelial cells which leads to many infectious diseases.

What is Helicobacter pylori?

The Helicobacter pylori penetrate into the stomach lining, where the body's immune cells can't reach it. This can lead to stomach problems.

So we can conclude that Helicobacter pylori can grow in the stomach because it invades epithelial cells which leads to many infectious diseases.

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explain the theory of evolution by natural selection

Answers

Answer:

Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.

Explanation:

The world resources simulation center is intended to address both current and future resource problems. please select the best answer from the choices provided t f

Answers

The world resources simulation center being intended to address both current and future resource problems is True.

What is World resources simulation center?

This is referred to as a visualization facility where you can see the trends, issues and how their the relate with one another.

The consequences of such relationships is also seen which is why it helps to address both current and future resource problems.

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Answer:

True!

Explanation:

Got a 100%!

True or False: All antibiotics work the same by attacking the cell membrane of bacteria.
A. True
B. False

Answers

Answer:

True

Explanation:

Many antibiotics, including penicillin, work by attacking the cell wall of bacteria. Specifically, the drugs prevent the bacteria from synthesizing a molecule in the cell wall called peptidoglycan, which provides the wall with the strength it needs to survive in the human body.

Let p represent the dominant allele for a trait and q represent the recessive allele for that trait. If the frequency of q is 0.2, then what would be the frequency of the heterozygotes in the population

Answers

The frequency of the heterozygotes in the given population is 2pq which is O.32, where p represents the dominant allele for a trait and q represents the recessive allele for that trait.

What do you mean by Heterozygotes?

The heterozygotes may be defined as the presence of two different alleles at a particular gene locus.

In the given population, the frequency of the q allele = 0.2.

Then, according to Hardy-Weinberg genetic equilibrium, the frequency of the p allele = 1 - 0.2 = 0.8.

∴ The frequency of heterozygotes, 2pq = 2×0.8×0.2 = 0.32.

Therefore, the frequency of the heterozygotes in the given population is 2pq which is O.32.

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Which of the following is most likely to cause antibiotic-resistant infections on a farm?
Not using antibiotics.
Under-using antibiotics.
Changing antibiotic brands.
Overusing antibiotics.

Answers

Answer:

D: Overuse of antibiotics

Explanation:

Bacteria reproduce and evolve quickly, if you use too much antibiotics, a few of that bacteria would be resistant to it, and reproduce quickly, whilst the non-resistant bacteria would be killed off.

Help me asap! The question is in the green box

Answers

Answer:

Dogs, and horses

Dogs we breed to have different lovable traits and Horses we breed to make a good race horse usually

Answer:

One example is plants.

Explanation:

We genetically engineer, or artificially select the genes of certain plants to make them better suited for the supply and demand of our agricultural community. Think growth hormones or genomes that affect crop yield, these are often changed in common crops to have the most efficient outcome for modern society.

2) Nichelle was wearing a bright red shirt in a very dark room. What color
did her shirt appear to the people with her in the room?
-0)
A) green
B) black
C) purple
D) dark read

Answers

The answer might be D) dark red

Which word describes something that works in the same way as a rader?


A. Echo

B. Shadow

C. Camera

D. Mirror

Answers

Answer:

Echo

Explanation:

Radars and Echoes work the same. Sound waves and sound reflection is used for echolocation for animals such as bats and dolphins. Radars are used to locate aircraft, ships, and other objects by using electromagnetic waves that bounce off of the object and back to the radar.

Answer:echo

Explanation:

just did the test

Evolution of a species acts on the of the species, not the .

Answers

Answer:

population.

Explanation:

hope this helps

Answer:

1- Population 2- Individuals

Explanation:

"Evolution of a species acts on the-

population

of the species, not the-

individuals." (Correct on edg)

(I added both since it's a two-part question on edg. The answer to your question is population)

Which of the following is an environmental factor that leads to food insecurity?

a) Poverty
b) Climate change
c) War and conflict
d) Agricultural practices

Answers

Answer:

war and conflict

Explanation:

Answer:

climate change

Explanation:

I took the test

How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.

Answers

Answer:

THERE  IS A SYSTEM OF BODY CALLED THE EXECTORY SYSTEM

Explanation:

The organs of this system get rid of a certain waste. The skin gets rid of sweat. The lungs get rid of carbon dioxide and water vapor. The liver gets rid of bile, which, in addition to breaking down fats, is partially made up of the breakdown of red blood cells. The kidneys get rid of toxins from the blood. The large intestine gets rid of undigested food. in this way the Dermal, Respiratory, Lymphatic, Urinary, and Digestive Systems work together to get rid of wastes.

A group of individuals of the same species that live in a given location at the same time is called a . All of the various groups of species at a particular locale is referred to as a .

Answers

Answer:

a group of individuals of the same species that live in a given location at the same time is called a population and the various groups of species at a particular locale is referred to as a community

Name the chemical signals which ants use to send messages to other ants.

Answers

Answer:

The most important way that ants communicate with other colony members is through unique chemicals called pheromones. Using their antenna to “smell” the pheromones, ants can communicate everything from colony activity to where food is located.

Explanation:

Why is water wet?
And what happens after we die?

Answers

Prime here ready to answer your question <3


Answer:
Water is wet because its viscosity is low

second We dont know what happens when we die

Explanation:

Yw, have a great day



-prime

Water is wet because its viscosity is low.

What is viscosity?

Viscosity is a metric for a fluid's flow resistance. It speaks of the internal friction of a fluid in motion.

A fluid with high viscosity resists motion due of high internal friction caused by its molecular structure. Low viscosity fluids flow freely because their molecular structure causes little to no friction when they are in motion.

The thickness of a fluid is another name for viscosity. You can picture honey and low-viscosity water (high viscosity). However, when considering fluids with varying densities, this concept can be unclear. The interaction of the various molecules in a fluid results in viscosity at the molecular level.

Therefore, Water is wet because its viscosity is low.

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