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algol13
4 years ago
12

What is the advantage for a species of pregnancy and lactation?

Biology
1 answer:
MrRa [10]4 years ago
5 0

Pregnancy ensures that the baby develops from a fertilized under the shelter and close protection of the mother. Lactation also provides the opportunity for the offspring to receive nutrients directly from the mother until it grows to a considerable size. This dependency on the mother and maternal care increases the survival rate of the offspring.






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3 years ago
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Consider two mammalian cells, one in G1 and the other in G0 (stationary) phase. If they are stimulated to pass the restriction p
Kamila [148]

Answer:

A, Both cells will replicate their DNA.

Explanation:

During the cell division, cell passes through several phases and divides. Before each phase, the cell has to pass through the checkpoints. At these cell checkpoints, the cell receives the internal and external signals.

When the cell is arrested at G₀ phase, the cell does not divide until it receives a signal to proliferate but when the cell passes the G₁ phase, the cell will divide continuously.

In the given question, if the cells when in their G₀ and G₁ phase receive proliferation signal, the G₀ phase cell will also divide and will replicate it DNA during S phase as G₁ phase cell will do.

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Sonja [21]

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a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base

Explanation: trust

6 0
3 years ago
During an investigation, Sam observes the number of hummingbirds that come to his large bird feeder at different times of day. H
mina [271]
The answer is <span>Time is the independent variable, and the number of birds is the dependent variable. </span>

<span>An independent variable is variable that is not affected in the experiment. It is what experimenter controls. On the other side, a dependent variable is called dependent because it depends on the independent variables. It is what is affected during the experiment.
In Sam investigation, he controls time - he counts birds at 6 a.m. and 6 p.m. So, time is the independent variable. The number of birds is affected during the experiment, so it must be the dependent variable.

</span>
3 0
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Use Ohm's law to find the voltage needed to make a current of 3 A in a resistance of 9 ohms.
alina1380 [7]

Answer:

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V=IR

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4 years ago
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