Materials, such as nutrients and oxygen, must be transported to every cell in the body in order for cells to be able to maintain homeostasis. which organ system is involved in the delivery of materials to cells?

What type of competition exsist between two species. turtles and fish

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 material is commonly used as a culture medium for living cells