Antarctica and greenland provide examples of climates. tropical subtropical temperate polar

Polar

Explanation:

The Antarctica and Greenland are the example of polar climate. An ice sheet is a mass of glacial land ice that extends upto 50,000 square kilometers.

The ice sheets covers most part of the Antarctica and Greenland. It contains more than 99 per cent of the freshwater that is present on the earth.

Such colder climatic conditions have almost no vegetation and life there is not possible easily.

-efficient data acquisition

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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: