The food chain is very important to ecosystems.
C. Soft or mechanical soft
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.
Tissues and organ systems.
here is the full chart:
cell --> tissue --> organ --> organ system --> organism
(think: group of [insert former here])
e.g. tissue=group of same cells
(et.al)
Answer:
loss of animal habits
Explanation:
I know this 1st answer alone I dont know the remaining
I hope it may helps you
