Coral ecosystems are a source of food for millions; protect coastlines from storms and erosion; provide habitat, spawning and nursery grounds for economically important fish species.
Answer:
The answer is B
Explanation:
Negative feedback mechanisms work to prevent sudden severe changes within the body.
Negative feedback helps in the maintenance of body parameters within their normal range thus prevent change within the body.
Ans: A change in the number of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can occur during the formation of reproductive cells (eggs and sperm), in early fetal development, or in any cell after birth.
Nematocysts functions to protect cnidarian animals. Nematocyst contain cnidoblast, this structure has a small thread filled with poison or venom that is released when stimulated by external triggers. Nematocysts are important in avoiding predators and for survival of cnidarian species.