The sex of mammals is determined by:
a. the autosomes they receive.
b. the type of sex chromosomes received.
c. the number of recessive chromosomes received.
d. none

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?