Answer:
I think it is the excretory system
Answer:
A non-vascular plant is a plant without tubes to carry water and nutrients throughout the plant. Non-Vascular plants are less complex than vascular plants. ... Non-Vascular plants cannot grow very tall and because of their small sizes they can absorb enough water to carry materials throughout the plant.
Answer:
H20
Explanation:
Because without water you will die faster then without food
Answer: ozone concentration
Explanation: The Dobson Unit is the most common unit for measuring ozone concentration. Becuse ozone concentration is hard to measure they use The Dobson Unit.
