Which feature do both roundworms and segmented worms have?
they are usually microscopic.
they lack a circulatory system.
they have setae covering their bodies.
they have a one-way digestive system.
check all that apply.

Fill in the blank with the best word to complete the sentence. white blood cells protect against and aid in blood clotting when injuries are sustained.

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.

Which environmental change would most likely result in bullfrog offspring that are able to store more water than bullfrogs in previous generations?