Which best illustrates the importance of dna? an elephant calf that has a mutation in its dna. a dog that has a mechanical limb. a potato plant that is modified to resist pests. a flower that has a pattern designed by people?

Trophozoite is the vegetative stage of a protozoan life cycle a. True b. False

What form does most nitrogen in the atmosphere come in

f a rock disintegrates by chemical weathering into small grains of similar composition, would this be considered reproduction? yes no

3. How do amphibians make up the deficiency in their circulatory system?

a leaf cell has a very low concentration of salt. What would happen to a leaf cell if it were placed in a highly concentrated salt solution?

The gas that makes up about 21 percent of the atmosphere is?

Under the microscope, a cell shows formation of centrosomes and spindle microtubules. What will happen next?

What is a measurement of the earth's history divided into time periods A) fossil record B) sedimentary rocks C) geologic time scale D) radioactive elements

The initial organisms on earth were essentially prokaryotic heterotrophs. how did they obtain their energy?

Lynx feed on rabbits, and the growth curves for these two species fluctuate together. This relationship is an example of a (n) Select one: a. S-shaped growth curve. b. J-shaped growth curve. c. irregular fluctuations. tightly linked cycle.