A boxer has been jumping rope for an hour. His leg muscles are burning and he feels weak. Which of the following most likely explains the burning he feels in his muscles? A. Lactate buildup B. Aerobic respiration C. High oxygen levels D. Ethanol buildup​

Where can a dna be found in a prokaryotic cell

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing