The conservation of energy is a because it is has been demonstrated without exception under certain stated conditions.
a. scientific theory
b. scientific variable
c. scientific hypothesis
d. scientific law

List two limitations of natural selection

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

The influenza virus cause the flu, but not other diseases. why?