2. The two systems that provide framework and protects vital organs of the body. A. Integumentary and Excretory
B. Digestive and Reproductive
C. Circulatory and Respiratory
D. Musculoskeletal
the bone​

According to the cladogram, which organisms have roundworms as a common ancestor?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam