Studying how drought affects the food supply in a region of the alaskan tundra would be studying a question at the level of ecological organization.

biosphere

population

community

ecosystem

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.