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3 years ago

What causes the youngest layers to be on top

Biology

2 answers:

Vinil7 [7]3 years ago

7 0

Answer:

When the sediment move and they are being settled somewhere, it means they are being deposited.

After a long period of time, there is a formation of layers of sediments on the top of each other. The weight of the top layer of sediment presses the lower layer and settle down it to the bottom layer, which results in the formation of sedimentary rock.

The oldest layer is on the bottom of the layer and the youngest one would be on the top layer because sediments include living organism, which often contains a fossil fuel.

solong [7]3 years ago

5 0

This law of science tells us that dirt, mud, sand and other sediments are almost always deposited in horizontal layers. As these sediments stack up vertically, they often harden, forming rock layers. Rock layers are usually ordered with the oldest layers on the bottom, and the most recent layers on top. The Law of Faunal Succession explains that fossils found in rock layers are also ordered in this way.

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List two other facts you can learn from this graph.

Kryger [21]

As the years increase the deer population increases.
As the years increase the the wolf decreases

7 0

3 years ago

I’m having trouble understanding this can someone plz explain?

Leni [432]

Answer:

look at the pictures

Explanation:

1. If we cross the parental generation which is RR x rr, the probability of the F1 generation to get rough coat is 100% and they will be a carrier of the recessive trait smooth coat.

Since the phenotypic ratio is 100% heterozygous Rr, in crossing the F1 to get the F2, we will use the genotype Rr. To get the F2, use the cross Rr x Rr.

The phenotypic ration for F2 is 3:1. There is 75% to get rough coat and 25% smooth. The answer is based on the result on the Punnett square. On the other hand, the genotypic ratio is 1:2:1. There is 25% probability to get RR genotype, 50% Rr, and 25% rr.

2. Since the two parental mice got 6 albino offspring and 5 brown mice offspring, it is approximately 50%. it takes a parental mice who is Brown that is carrying an albino trait crossed with an albino to get offspring with almost the same number. Therefore, the genotype of the brown mice is Aa.

8 0

3 years ago

List 4 ways in which you can decrease your chances of catching the flu or cold

shutvik [7]

Hi there!

#1 Washing you’re hands after touching anything that may be dirty, or even just using the restroom.

#2 Disinfecting door nobs, handles, desks and things you may touch on a daily basis.

#3 Stay away from those you may think are sick.

#4 Having those around you remember to cover their mouths and noses while sneezing.

Remember to do this using the pit of you’re elbows NOT you’re hands. This can spread germs more easily.

Hope this helps you!

6 0

3 years ago

Read 2 more answers

What property of water allows fish to survive in a lake that is frozen over?

Fiesta28 [93]

C. Ice is less dense than water which means water condenses when it freezes allowing the ice in a lake to float on top of the water preventing the water below from freezing.

4 0

3 years ago

List the four types of stem cells, give an

Flauer [41]

Answer:

Totipotent Stem Cells - They can differentiate into any type of human body cell or the placenta.

Example: Fertilized egg cells.

Pluripotent Stem Cells are from totipotent cells and can differentiate into any cell in the human body; however, not many are in the placenta.

Example: Blastocyst cells.

Multipotent Stem Cells - They can only differentiate into closely related cells.

Example: Blood stem cell

Unipotent Stem Cells - They can only produce their type of cell.

Example: Skin stem cells (which can only become a new skin stem cell).

Explanation:

4 0

2 years ago