Biology, 13.07.2019 14:10, xander252577

Explain why water used by plants and animals today has been around for millions of years.

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Simply because of the water cycle. Water on the earth is evaporated, rained down and then evaporated over and over again. i hope this helps friends

answered: ghari112345

The water that exists on earth is constantly undergoing the process of the water cycle. The water content is balanced due to this cycle. There is abundant water existing in three different forms namely solid, liquid and gas.

According to the water cycle, the water in the oceans gets evaporated and rises up due to the evaporation process. This water vapors then goes into the atmosphere and when condenses forms clouds and precipitates back on earth in the form of rainfall, snowfall, and dew. This water flows over the inland areas and adds to the streams, lakes, and rivers. Some water percolates down through the rocks and mixes with the groundwater. These waters eventually mixes with the seas and oceans. Again, some parts of water are absorbed by the plants and trees and the remaining is released by the evapo-transpiration method.

So the water basically is circulating from the land to the sea and to the atmosphere and has been there for a long period of time, for about millions of years. This water is still being used by the plants as well as animals now.

answered: Guest

anti-human il1 beta stable cell line (gevokizumab) can be provided from creative biolabs.

explanation:

answered: Guest

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:

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Explain why water used by plants and animals today has been around for millions of years....