Aplant uses the sun to grow leaves. this is an example of
a. photosynthesis.
b. ecosystem.
c. plant succession.
d. evolution.

The correct answer is a. photosynthesis.

Explanation:

Photosynthesis is the process by which plant generally make it's food with the help of carbon oxide and water in the presence of sunlight. The light energy is entrapped by the chlorophyll pigment present in the chloroplast in the leaves.

Then this light energy is used to produce chemical food in the form of glucose and the process is called photosynthesis. Then this glucose is broken down to produce energy which is used by the leaves to grow.

The photosynthesis reaction is : 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂

Therefore the use of solar energy by plants to grow leaves is the example of photosynthesis. So the correct answer is a. photosynthesis.

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: