Somatic cells are diploid (2n) while gametes are haploid (n). In other words, gametes have half the number of chromosomes that somatic cells do.
b Communication helps animals find their food.
<span>Is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor</span>
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The biggest difference between the two is that the nervous system uses electrical impulses to send signals through neurons, whereas the hormonal system uses chemical messengers transported into blood plasma to target cells.
Transmission by the nervous system is short-lived but quick, whereas transmission by the hormonal system is long-lasting but takes much longer. Hene, communication is faster when using the nervous system.
In the nervous system, responses are localised - whereas in the hormonal system, they are widespread. Responses are often permanent in the hormonal system, but temporary and reversible in the nervous system.
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D. The effects of pollution can be studied without harming an ecosystem.
Explanation:
The most ethical reason for carrying out a simulation study instead of a direct investigation is the effects of pollution can be studied without harming an ecosystem.
Although he has noble cause for studying the effect of oil leak into the Gul of Mexico, introducing a whooping 10 million liters will even cause more damage to the ecosystem from the ensuing study.
Using a simulation will circumvent this risk and environmental pollution that will ensue.
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Pollution brainly.com/question/10743354
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