It's a ! cnidocytes help in defence and also in capturing prey ! so answer is A !!
<span>Survival of at least a few members of a population after a major environmental change is most dependent on 3) variations in many different traits in many individuals in the population.
Variation is important for a species which wants to survive huge changes in the environment. If they cannot adapt to their new surroundings, they won't be able to survive. This is where variation comes in - it enables a species to develop new techniques and traits necessary for survival.
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Chopping down trees hurts the environment
In the southern hemisphere, the tundra includes Antarctica. The arctic tundra in the northern hemisphere includes parts of Russia, Iceland, Canada, Norway, Greenland, and Alaska (state in the US).
Answer: Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is a cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Explanation: Hope this helped!