Answer:
Cell Wall: This is the rigid outermost layer of a plant cell. It makes the cell stiff -providing the cell with mechanical support - and giving it protection. Animal cells do not have cell walls. Cell Membrane: This is a protective layer that surrounds every cell and separates it from its external environment.
Answer:
phosphates will return to the soils or oceans again during decay
Hope I helped :D
A sperm cell and an egg cell fuse to form a zygote.
B creates a disturbance called an electromagnetic wave
