B. Isthmus
Hope this helped!
You are supposed to go take a walk and observe your surroundings. The concepts taught in your class are to be used so if you give me what you learned that would help. So out of those 10 relationships of each biological surrounding you list the concept taking place and then pick 5 and write a summary on the back of the page. Hope this helps...
An alternative energy is anything that doesn't consume fossil fuel.
These are alternative energy sources:
Solar energy
Wind energy
Geothermal energy
Hydroelectric energy
Biomass energy
Ocean energy
Hydrogen energy