Question 10 Which body systems are involved in the reflex action shown in the diagram?
ОА
the respiratory and excretory systems
B
the excretory and muscular systems
CO) O
с
the muscular and nervous systems
D
the nervous and digestive systems

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