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OLga [1]
4 years ago
9

Could someone please help me?(:

Biology
1 answer:
almond37 [142]4 years ago
3 0
For the first question, the answer would be B. Low genetic diversity causes a species to have a likely chance of becoming extinct should a natural disaster hit. For example, birds and the dinosaurs. Birds are descendants of dinosaurs and survived the Ice Age by having a means for keeping warm, while the bigger reptiles died out due to genetic diversity not making them as adaptable. That's why the lizards today are smaller, because their size (less food needed to survive, and kept warm with smaller amounts of sunlight) allowed them to survive and reproduce.

As for the second question, the answer would also be B. Diversity has become greater over time. An excellent example are the Galapagos island finches. Due to natural disasters, the species have been divided up and thus adapted different wingspans and beak shape to fit their diet over generations.
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A researcher examining a root tip observes a plant cell with condensed sister chromatids, kinetochores with attached microtubule
Basile [38]

Answer:

The statement 2 best describes the next process taking place within the cell.

Explanation:

A kind of cell division, which is characterized by the differentiation of a single parent cell into two daughter cells that comprise equivalent chromosomes number is termed as mitosis or reductional division. In the given case, the arrangement of chromosomes at the equatorial plate indicates that the cell is currently in the metaphase stage of mitosis.  

After going through the stage of metaphase, the cell moves into the anaphase stage. In the anaphase stage, the sister chromatids begin to segregate and move towards the opposite pole of the cell. Thus, statement 2 correctly illustrates the next stage of the cell.  

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3 years ago
What is an important function of the urinary system?
77julia77 [94]

Answer:

the kidneys are the most important function of the urinary system

Explanation:

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2 years ago
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Answer:

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Explanation:

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8 0
3 years ago
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Two women are comparable in age, body conformation, and are pregnant at the same time, but one experiences stretch marks, while
adell [148]

The question is incomplete as it does not have the options which are:

a. The woman with stretch marks has a greater collagen-to-elastic fiber ratio.

b. The woman may have different gender babies.

c. The woman with less stretch marks has larger skin cells.

d. The woman without stretch marks has more cholesterol in her diet, which affects her cell membranes.

Answer:

The woman with stretch marks has a greater collagen-to-elastic fiber ratio.

Explanation:

The stretch marks on the hips, stomach and breast of pregnant women is a very common problem. These stretch marks appear pinkish in color which is very difficult to treat.

These stretch marks are the result of the collagen to elastin ratio which increases and stretches. This stretching happens due to the sudden or rapid increase in the weight of the body or the affected portion.

Thus, the selected option is correct.

4 0
3 years ago
When an automatic battery is fully charged the sulfuric acid and water mixture will have a specific gravity of about
Archy [21]

the specific gravity of pure sulfuric acid is---------> approximately 1.835 g / cm3

the specific gravity of water is -------------------- >1.000 g / cm3.

 The electrolyte, that is, the dissolution of sulfuric acid in water, is usually at a rate of 36% acid, so that, in a fully charged element, we can deduce the electrolyte density, is 1.295 g / cm3. (see attached table)

The specific gravity is actually the difference in the weight of water compared to a specific fluid. It is measured with a hydrometer


8 0
4 years ago
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