_ are processes existing in or produced by nature, including weathering, erosion, mountain formation, volcanic activity, and plate tectonics.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

Where does the information about where each transcription factor binds originate?