Evolution is a

a. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.

b. prediction because it makes an educated guess about events that will occur in the future.

c. variable because it is a factor that can be changed during experimentation.

d. law because it has been proven without exception under certain stated conditions.

the answer is a, since no one responded i chose this answer! i do not need any

A. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.

Explanation:

STUDY ISLAND

asfe afr dsef rfdg fghgnts fhbfgd   hdfdx

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure