Which type of rock was precipitated from seawater as the Mediterranean Sea evaporated between 8 million years ago and 5.5 million years ago

Answers

Answer 1

Answer: the answer to this question is Rock Salt

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Why do all normal cells in human body have same number of chromosomes?

Answers

The reason as to why all human body cells have the same number of chromosomes is because of the process of mitosis and meiosis.

Mitosis is the process of cell division in which body cells or somatic cells divide to yield two daughter cells with the same number of chromosomes as the parent cells. The process involves a series of steps, and results in the formation of two new nuclei each having the same number of chromosomes as the parent nucleus. The process ensures that have the same number of chromosome. In meiosis, sex cells have half the amount of chromosomes that a normal cells has and therefore when they join another, there are 46 chromosomes in the cell.

Females have two X chromosomes in their cells, while males have one X and one Y chromosome. Mitosis; before it divides it replicates & meiosis; sex cells have half the amount of chromosomes that a normal cell has so when they join another, there are 46 chromosomes in the cell.

_________________is the condition in which human needs are met in such a way that a human population can survive indefinitely at a standard of living similar to the current one. A) Environmentalism
B) Population Growth
C) Sustainability
D) Biodiversity

Answers

Answer:

The correct answer is - Sustainability.

Explanation:

Sustainability is the ability to sustain at a constant rate. It is normally explains the ability of biosphere and human to coexist over the particular time period. Sustainability is the condition in which the human population can co-exist constant over time due to the need of human are met.

Other three options are not suitable as biodiversity explains the different type of life present in a particular area. Environmentalism is related to overall environmental conditions. Population growth is a growth in population over time due to some other conditions.

Thus, the correct answer is - Sustainability.

Which of the following is an example of extrusive rock that has cooled too quickly for grains to form?

Answers

I believe the answer is Volcanic glass

Explain how it might happen that a human offspring with 47 chromosomes could be produced

Answers

Whenever the sperm and the egg combine, it is possible for one or the other to not split properly and bring 2 of the chromosomes instead of just 1

Suppose that in humans the ability to roll the tongue (R) is dominant to being unable to roll it (r). Having freckles (F) is dominant to having no freckles (f). A freckled tongue-roller could have which genotypess? A. RRFF
B. RrFf
C. rrFF
D. RRFF and RrFf only
E. all of the answer options are correct

Answers

RRFF and RrFf

Explanation:

the R and F Will always dominate if present

so rrFF is freckled non tongue roller

In a community, there are five brown squirrels, five grey squirrels, and ten white squirrels. what is the relative abundance of brown squirrels?A 5%
B 20%
C 25%
D 50%

Answers

i think the answer is C.25%

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