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Nadya [2.5K]
4 years ago
13

By comparing fossils in higher sedimentary layers with fossils in lower sedimentary layers scientists can learn which of the fol

lowing
Biology
1 answer:
Artemon [7]4 years ago
3 0
Scientists can learn, which types of organisms were more common during time periods, how species have evolved over time, and the relative age of different species. Sedimentary rocks can contain fossils because, unlike most igneous and metamorphic rocks, they form at temperature and pressures that do not destroy fossil remains. Dead organisms can become sediments which may, under the right conditions, become sedimentary rocks. 
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Iced tea mix is stirred into water until it dissolves . which statements are true?
Ray Of Light [21]
A. because the iced tea mix dissolves in the water therefore it is a solvent <span />
6 0
3 years ago
A labeled model of an amoeba is shown above. These are heterotrophic, single celled protists. They have unique cellular structur
Lerok [7]

Answer:

The answer is A) Phagocytosis.

Explanation:

An amoeba usually gets its nutrients from engulfing large food particles by the process of phagocytosis.

  1. As an amoeba approaches the desired food particle, it <u>extends it pseudopods</u> around it, eventually <em>surrounding the food </em>and internalizing it.
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5 0
3 years ago
How many dependent variables can be tested during any single experiment?
Vesna [10]
As many as there are needed. you just can't have many independent variables
6 0
3 years ago
Natural selection leads to_______ .
Serjik [45]

Answer:

Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce.

This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring. Charles Darwin was a famous English naturalist.

8 0
3 years ago
A large population of mice is isolated on an island. There are two varieties of the mice, brown and gray. Their fur colors close
Nadusha1986 [10]

Answer:

C. disruptive natural selection

Explanation:

Disruptive selection is a type of natural selection in which extreme phenotypes are favored over intermediate phenotypes in a population. Environmental change is a major factor that can bring about disruptive selection. The individuals with the extreme phenotypes adapt well and are able to survive in the particular environment, while those individuals with intermediate phenotypes would hardly survive or be greatly reduced in number.

The gray rock outcrops and the brown soils of the Island favors the survival of mice with brown and gray fur color respectively. The fur colors of these two extreme phenotypes in the population of mice, have helped both varieties against Hawks as their main predators, hence establishing their existence on the Island.

3 0
4 years ago
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