There are many types of chemical reactions that happen in the body to build molecules, break down molecules and create energy. this is an example of which characteristics of life?
a. metabolism
b. growth
c. homeostasis

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

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

Explain how scientists use geologic time to determine the age of landforms.