PART 1: In the space provided, write the letter "A" if the term refers to an abiotic
factor. Write the letter "B" if the term refers to a biotic factor.
1. Moisture
2. Bacteria
3. Soil
-4. Carbon dioxide
5. Corn seeds
6. Insects
7. Minerals
8. Light
9. Grass

1. Moisture A

2. Bacteria B

3. Soil A

-4. Carbon dioxide A

5. Corn seeds B

6. Insects B

7. Minerals A

8. Light A

9. Grass B

Explanation:

Biotic factors refers to the living component of an ecosystem. In this case, they include:

Bacteria B

Corn seeds B

Insects B

Grass B

On the other hand, abiotic factors refers to the non-living component of an ecosystem. in this case, they include:

Moisture A

Soil A

Carbon dioxide A

Minerals A

Light A

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:

true is the final answer!