Flatworms absorb oxygen by diffusion mechanism through their
skin to the cells in their bodies. Since flatworms do not have a circulatory system,
their bodies' cells are positioned close to the skin to ease the uptake of
oxygen from surrounding fluids or water.
Saturation I think not 100% sure sorry
Answer: Crickets chirp faster when the night is warmer.
Explanation:
(apex)
Answer:
One
Explanation:
The only star in our solar system is the Sun.
Multi-cellular Heterotrophs
Animals have more than one cell and can't produce their own food
