All living things bear the basic similarities (shared characteristics of life) because of

a. proteins
b. dna
c. the central dogma
d. evolution

DNA.

Explanation:

DNA is present as the genetic material of almost all the living organism except some viruses. DNA by the process of transcription and translation encodes for the particular protein.

All living things have basic properties of life due to the presence of DNA. The basic structure of DNA is similar in all organism. Four nitrogenous bases adenine, thymine, guanine and cytosine is present in DNA and the deoxyribose sugar.

Thus, the answer is DNA.

chordata is the answer

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion