3. which of the following statements regarding dna is false?
a. dna uses the nitrogenous base uracil.
b. dna is a nucleic acid.
c. one dna molecule can include four different nucleotides in its structure.
d. dna uses the nitrogenous base thymine.
e. dna molecules have a sugar-phosphate backbone.

Which box will not accelerate? 4 newtons 4 newtons 4 newtons 25 kg 4 newtons 15 newtons 10 kg 30 newtons 40 newtons 50 kg 30 newtons 30 newtons

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

Slow down transpiration by the stomata question 9 options: a guard cells; closing b chloroplasts; closing c guard cells; opening d chloroplasts; opening