The S phase is part of the cell cycle and takes place in interphase. Which is the process before mitosis. In this phase the DNA is replicated.
Ans.
Meiosis involves a type of cell division in sexually reproducing organisms that results in formation of four daughter cells from a single parent cell, having half of the genetic material as in parent cell. Meiosis is divided into meiosis I and meiosis II.
In gamete forming cells of humans are diploid cells and have 23 pairs of chromosomes (or 46 chromosomes). Each gamete forming mother cell undergoes meiotic division to form haploid daughter cells or gametes, each with 23 chromosomes.
Thus, the correct answer is 'twenty-three' as there are 23 chromosomes present in human sex cells at the end of meiosis II.
Based on current data;
- The amount of carbon dioxide put into the atmosphere annually dueto human activities is 840 gigatons
- The amount of carbon in the atmosphere is 10 gigatons
- The amount of carbon stored in fossil fuels is 10,000 gigatons
<h3>What is the carbon cycle?</h3>
The carbon cycle a cycle showing how carbon is recycled between the atmosphere and earth.
The carbon cycle ensures that their is a balance of carbon in the atmosphere as well as on earth.
Human activities have increased the amount of carbon in the atmosphere.
The amount of carbon dioxide human activities put into the atmosphere annually in the present day is 840 gigatons.
The amount of carbon in the atmosphere is 10 gigatons
The amount of carbon stored in fossil fuels is 10,000 gigatons
Therefore, it can be concluded that human activities disrupt the carbon cycle.
Learn more about carbon cycle at: brainly.com/question/24293689
Only 200 out of 2 000, 000 sperm cells reach the ovum. And only one (in exception to very rare cases of two) sperm cells actually participate in the process of fertilization. In comparison, an average female only produces 400 of egg cells during their lifetime, but the eggs cells are significantly larger than sperm cells.
Answer:
Gravity?
Explanation:
These are the things needed for life: water, air, food, light, shelter, and space. It doesn't include gravity.
