Plant responses to an environmental change by: increase in ions and organic compounds in xylem and phoem, form thick, waxy scales over leaf buds, and leaves drop off.
what kind of ecosystems would be most beneficial to the plants with the above changes?
1. ecosystems with great variation in rainfall throughout the year.
2. temperate ecosystem with cold winters
3. ecosystems near the equator with consistent conditions year round
4. desert ecosystem receiving occasional rain

what is the aerea shown

explanation:

the answer is c

explanation:

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

answer; hypnagogic sensations)