Carbon dioxide made by cells leaves your body through the respiratory
system by moving from the

a. alveoli to the bronchi to the bronchioles
b. bronchi to the bronchioles to the nose
c. trachea to the bronchi to the bronchioles
d. bronchioles to the bronchi to the trachea

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.