17.​ involves examining many thousands of mutagenized individuals to find those few who show a specific altered phenotype and defects in these genes are usually .​

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic