Soils have many different layers called soil profiles

a. true

b. false

True

Explanation:

Soil profiles can also be known as soil horizons. The physical, biological, and chemical factors of the soil differs from layer to layer.

false if you dig in to any type of soil you're bound to find different layers or horizons.Then if you put the horizons together that would make a soil profile

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.