Which of these is an example of a biotic factor that could limit a community in an ecosystem? A. A drought occurs for several months.
B. New predators move into the ecosystem.
C. A hurricane passes through an ecosystem.
D. Living space is lost due to human activities.

B. New predators move into the ecosystem.

Explanation:

A, C, and D are all abiotic (nonliving) factors that could limit a community in an ecosystem.

"do a testcross with a homozygous recessive plant."

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.