6. What does the rate of transpiration depend on? * The amount of water in a plants
The amount of water in the ground
The size of the opening in the stomata
The size of the plant
7. Openings and closings in the stomata are regulated by what?
Guard cells
Chloroplasts
Roots
Chlorophyll

the amount of water in plant

Guard cells

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.