For the people that have these answer choices
A. Beaver
B. Lichen
C. Soil
D. Spruce
Its C. Soil
Water can act as a acid or a base
Answer: A plant cell has a cell wall, a central vacuole, and phosphids or chloroplasts. The cell wall provides structural support and protection.
Answer: Abiotic factor for polar: Ice
Abiotic for desert: Sand
Biotic for polar: Polar bears
Biotic for desert: Cacti
The types of factors are different because there are different set conditions for each ecosystem. A cactus is built for it's hot, dry ecosystem. If it were to move to a polar ecosystem it would not survive there. Same for the polar bear. It's built for polar regions. It has white fur to blend with the white ice to help it blend in and it's adapted to swim to get it's food source.
Explanation:
