How does waste move from kidneys to the bladder in the human excretory system? a) it travels through tubes called ureters. b) it is picked up by blood and deposited in the bladder as blood circulates through. c) it enters the digestive system after it is filtered through the kidneys. d) it flows through the intestines.

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms