Those factors that are kept the same in the experimental group and the control group are called: a. manipulated variables b. experimental variables c. observed variables d. control variables

Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla