4. what do calories measure?
sugar
energy
mass
weight

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Ecology can best be described as the study of what

Ineed with a hypothesis my question is can seeds sprout in different locations?