Nutrients
a. are synthesized by cells
b. are broken down outside the cells
c. require energy to be broken down
d. are broken down inside cells
e. do not play a role in the synthesis of complex molecules

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

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