Which structure in the leaf controls the opening and closing of the stoma?

a. cuticle

b. epidermis

c. guard cell

d. spongy mesophyll

The gradual development of a species into a new one to survive. A. Natural Selection B. Evolution Which one?

2. What is the formula of aluminum oxide? a) Aljo b) AIO c) Al, 0, d) AIO

Which organic molecules are used for long term energy storage?

Where did neil shubin find his tetrapod?

The inheritance of sickle cell anemia involves incomplete dominance. (S determines normal hemoglobin, it is dominant; s is the sickle cell gene). A homozygous recessive person has sickle cell anemia. A heterozygous person has the sickle cell trait.

N sexual reproduction, an offspring is produced with genes from both parents. when the offspring has a new genetic variation that it got from neither of its parents, it is called

What is the purpose of a cow "sitting quietly chewing"?

If one stubs one's toe, the painful sensation is carried to the brain by neurons in the:Group of answer choice A. soccipital lobe. B. frontal lobe. C. central nervous system. D. peripheral nervous system.

a rock is dropped from a height of 60 m and is in free fall. What is the velocity of the rock as it reaches the ground 3.5 seconds later?

What does the presence of many mitochondria imply about a cell's energy requirements