Answer: elevation, index, contour interval
Explanation:
You can learn their traits such as the color of the feathers and where they came from or originated from
Answer:
True
Explanation:
The deep parts of an ocean receive minimal or no sunlight. Hence, the survival of phototropic organisms like plants and algae is impossible or minimal here. Hence, there is a very little diversity in deep oceans. The organisms living here have to feed on dead decaying matter or on each other for survival. Mostly, the organisms living here use dead organisms as food. No other food source is available here.
To be able to compare the results to a sample without any of the independent variable added.
