Answer:
D, sperm contains only 23 (to be combined with the egg which has 23 chromosomes too)
3.1+2.7+4.6+1.9+8.7=21
21:5=4.2
The average is 4.2
<span>Carbon is present in the biosphere and other systems of the planet and is an essential part of life. Carbon moves through these systems by feeding the heterotrophs of other organisms, through the consumption of dead organisms. When oxygen is present, there is aerobic respiration, which releases carbon dioxide into the surrounding air or water. It plays an important role in the structure, biochemistry, and nutrition of all living cells.</span>
Natural channels. Natural channels are formed by fluvial process and are found across the Earth. These are mostly formed by flowing water from the hydrological cycle, though can also be formed by other fluids such as flowing lava can form lava channels.
Answer:
So that we can identify them in the same species.
Explanation:
Many animals have similar species but different genus.
