Thomas constructs a model by completing the following steps. 1. Draw a diagram that shows where oxygen is found on Earth, including the atmosphere, bodies of water, land, and living things.
2. Draw arrows to show how oxygen moves and changes form from one location to another.
3. Label each arrow.

Thomas has constructed an example of what type of ecological model?
A. biogeochemical cycle
B. food web
C. energy pyramid
D. geological system

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Which of the following describes research that would be considered basic science? a. a farmer is trying to improve his crop yields by using a new kind of fertilizer. b. a college students is curious about the growth of desert pants in the presence of excess amounts of water. c. government officials are trying to prevent the spread of new strain of influenza virus. d. a doctor is trying to determine why a patient is feeling tried and sick.b.a college students is curious about the growth of desert pants in the presence of excess amount of water