Carol is enjoying eating her dinner. while eating, she notices that her saliva secretion is higher than normal and that she feels good and relaxed. what causes this relaxed state?

Identify the main component f natural gas

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?

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body