What animal in the Andes Mountains would be at the top of the food chain A. Rats B. Pumas C. Bears D. Guanacos. Please help

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

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