C. Desert
A. The tilt of the Earth's axis as it circles the Sun.
The answer would be respiratory. Because asthma affects your breathing which is what the respiratory system is used for. (Lungs)
Answer: Diversity is needed in approaches to managing forest ecosystems, just as in the forest ecosystems themselves. It is now widely accepted that biodiversity is the measure of biological variety at many scales, from the gene to the ecosystem.
In 1665, Robert Hooke observed D. Cell Walls through a microscope!
Answer:
B) Competition
Explanation:
The native and non-native cattails are <em>competing </em>for the area.
