What are these structures an example of? transitional structures
analogous structures
vestigial structures
adapted structures

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

Spirochetes have a twisting and flexing locomotion due to appendages called

Glands that the body deal with stress and respond to emergencies.