Based on scientific research, which statement best describes mutations? mutations are rare occurrences. mutations are always harmful. mutations cannot be inherited. mutations cannot be acquired.

Mutations are rare occurrences and are often caught by the cell's "proofreading" system during cell replication and so are not passed on to offspring.

Genetic mutations are not always harmful. A lot of mutations have a positive effect on the host. Some genetic mutations may help the host endure certain conditions in the environment, or eat certain food, or resist a certain superbug or virus, etc. However, some mutations can be harmful.

If a mutation occurs in a sex cell, then it may be inherited

Mutations can be acquired.

A) mutations are rare occurrences

Explanation: edg.

the answer is false?

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg