PLEASE HELP
is bedrock deeper on a mountain or flat area? Why?

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

"do a testcross with a homozygous recessive plant."

i wish i could with all of them i can barley see the first one so here's the answer to the first one b