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oee [108]
3 years ago
9

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in Cenozoic deposits, but they are general

ly dissolved or recrystallized in older deposits.
TRUE or FALSE
Biology
2 answers:
Katen [24]3 years ago
7 0

Answer:

The above statement is true.

Explanation:

The shells of aragonite are affected by various ongoing earth dynamic processes, such as physical and chemical weathering and erosion of the rock layers that contain these fossils, chemical reactions between fossils and acid water dissolving the materials of the shells.

The older Paleozoic and Mesozoic rocks have undergone significant changes with increasing time due to the effects of events such as tectonism, volcanism, erosion and so on. So the fossils present in these rocks were affected and were altered. But the rocks of the Cenozoic era are of recent age, about 65-60 million years old. During this era,<u> massive deposition of sediments has taken place throughout the globe which provides a suitable condition for the preservation of fossils like aragonite shells</u>. So these fossils found in these deposits are not much altered.

bagirrra123 [75]3 years ago
6 0
The answer is true my good sir
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Answer:

Exocrine glands secrete sweat and oil while endocrine glands secrete hormones.

Explanation:

As she knows the endocrine and exocrine glands in respect of their origin from skin, so our answer must be related to the skin so that she can understand easily. So our answer should be as follows -

  • Endocrine glands are those glands which secrete hormones directly to the blood stream but exocrine glands are those glands which secrete sweat and oils directly to the skin surface.
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4 0
3 years ago
Which statement correctly compares the number of chromosomes in a body cell to that in a sex cell of humans?
Elza [17]

Answer:

D

Explanation:

Two sex cells, the gamete and the sperm, come together to make the body cells, so the number of chromosomes for a body cell must be double that of a sex cell, 46/2=23

i hope this helps u!

pls give a brainliest and a thx ;)

3 0
3 years ago
The ultimate goal of sustainable development is to limit the future use of resources b. meet current and future resource needs C
egoroff_w [7]

The correct answer is B. Meet current and future resource needs.

Explanation:

Sustainability implies an equilibrium between the natural resources available and the resources humanity requires. This equilibrium is reached when the natural resources extracted from nature are enough to satisfy human needs without depleting the resources or causing these are not available in the future. In this context, the goal of sustainable development is to make sure now and in the future resource needs are meet (option B). Moreover, this is possible through actions such as recycling, reducing deforestation, creating environment-friendly technologies, among others that reduce the depletion of resources or preserve the environment.

4 0
3 years ago
What happens if a population is not in hardy-weinberg equilibrium apex?
lianna [129]
<span>If a population is not in Hardy-Weinberg equilibrium that can cause deviations from expectation depending on the assumptions of HW that are violated. If a population violates some of the assumptions (like mutations, migrations and selection) the allele frequencies will change over time. Also, if a non-random mating occurs (like inbreeding), it will cause an increase in homozygosity for all genes.</span>
6 0
3 years ago
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Dimas [21]

Answer:

Cytokinesis

Explanation:

Cytokinesis is similar to telophase. The cell devides it cytoplasm into two pieces which creates two daughter cells.

5 0
3 years ago
Read 2 more answers
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