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Elis [28]
3 years ago
13

She enjoys studying fossils. She learned how fossils called index fossils are found in the rock layers. The index fossils help s

cientists study rock ages. In what way do index fossils help determine rock ages?
A. Index fossils are widely distributed but were not around long, and so they show up in only a few rock layers.
B. Index fossils are widely distributed and were around for a long time, and so they show up in many rock layers.
C. Index fossils were around only a short time but they show up in many rock layers.
D. Index fossils are widely distributed and are always found in every sedimentary rock layer.
Biology
1 answer:
guapka [62]3 years ago
7 0
Answer: (B)

Explain:
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You are breeding snakes. Black skin color is (B) is dominant to red skin color (b).
Y_Kistochka [10]

Answer:

25% of the offspring will have red skin

Explanation:

         B        b

B      BB     Bb

 -----------|-----------    

b      Bb     bb

So basically, if only 1 out of 4 of the punnet squares has both recessive alleles for red skin, then that makes it being 25% of offspring would have red skin.

Put me as brainliest plss!!

6 0
4 years ago
After succession, ____________ account for most of the vegetation on the island, leaving some ____________, _____________, _____
mote1985 [20]
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3 years ago
4. Read the following sentence from the section "Are All Enzymes Proteins?"
ololo11 [35]

Answer:

D

Explanation:

Pretty sure that's the correct answer.

6 0
3 years ago
Which of the following are associated with a rock's chemical composition? Select all that apply.
harkovskaia [24]
B. Crystalline structure

C. Types of chemical elements

And

D. Amounts of chemical elements
8 0
3 years ago
Read 2 more answers
The majority of water found on Earth is: <br><br> ice<br> water vapor<br> fresh water<br> salt water
sergejj [24]

The correct answer is D. Salt water.

Explanation

The hydrosphere is the system that groups all the waters of the earth that include oceans, seas, rivers, lakes, lagoons, frozen waters like ice and snow, among others. The water of the earth can be classified between salt water and freshwater, within the first group we find the oceans and the seas that represent two thirds of the total water of the earth, that is, 93 percent of the total water of the earth, a figure close to 1 370 323 000km³; the rest of the water is fresh and consists of rivers, lakes, lagoons, streams, groundwater, and glaciers. So, the correct answer is D. Salt water

4 0
3 years ago
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