If calcium levels within a man’s blood drop too low it can result in twitching, depression, coma, or even death. which characteristic of life is the man being affected by?

living things require energy.
living things reproduce.
living things must maintain homeostasis.
living things are made of cells.

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!