Scientists use models for many reasons. what is one of those reasons?

to observe processes that happen too quickly or too slowly to be observed directly

Explanation:

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.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.