So it can be easily accesed. and also because if they didnt, it would be outdated with todays technology. hope this helps.
Answer:
Abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
Biotic factors, can be described as any living component that affects another organism or shapes the ecosystem.
Answer:
carbon dioxide is correct
Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
An adult sponge reproduces by mitosis, or cell division.