This cold river of air travels from west to east in the northern hemisphere. last winter, it dipped far south to bring cold air and snow to many southern states. this is the a) hadley wind. b) polar jet stream. c) arctic jet stream. d) tropical jet stream.

Twind is considered to be an abiotic factor because it.?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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-