Which of the following is an effect of organic matter on soil? a. improved soil structure b. decreased water retention c. increased nutrient loss d. all of the above

How is mitosis different in plants and animals? a. in animals, the cell membrane pinches together. b. in plants,the dna is one circular chromosomes. c. in plants, there are no sister chromatids. d. in animals, a new cell wall forms.

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction

Which best describes somatic mutations? they are usually passed on to offspring. they can cause different kinds of cancer. they always result from point mutations. they only occur in reproductive cell