Which statement concerning sexual reproduction
is correct?
(1) it is not necessary in order for the individual
to survive.
(2) the offspring are identical to the parent.
(3) it is necessary in order for the individual to
survive.
(4) the offspring are identical to each other.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic