Explain what extinction threats a frog living on a mountainside in costa rica might face.

Every species adapted to the place where it lives.

If you change that place, some characteristics that help to survive in the original place may not help in the new one or even be harmful.

Frog is an amphibian animal.

It needs humidity in whether and be near to water for things like procreate and keep it's skin wet.

If you change to super warm or cold weather, of arid one this frog will die.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

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.