The smallest portion of the human brain is the cerebrum. true or false

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Which muscle is responsible for inhalation ?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above