Which structure in the leaf controls the opening and closing of the stoma?
a. cuticle
b. epidermis
c. guard cell
d. spongy mesophyll

Astudent conducts an experiment to determine how the amount of water given to a plant affects it growth what is the dependent variable for this experiment

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

How do living things obtain phosphorus