Deforestation of rainforests would most likely affect such plants by causing , which could result in the
of some plants with medicinal properties. This situation represents a risk to the
humans receive from ecosystems.

Loss of habitat and extinction.

Explanation:

Deforestation causes the destruction of beneficial plants such as medicinal plants. Due to this destruction, they loss their habitat and gradually become extinct. The extinction of these medicinal plants makes the survival of human difficult because from these medicinal plants medicine are formed which can be used for the treatment of various diseases so deforestation has adverse affect on humans.

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:

b.have there own function.