Answer the following question given this paragraph: Whales and bats have the trait of echolocation. This is the ability to locate objects in the dark by bouncing sound waves off them. The most recent common ancestor of whales and bats did not have this trait. Apply lesson concepts to explain how the trait evolved in whales and bats. Q: What term is defined as the ability to locate objects in the dark by bouncing sound waves off them. Choices: - morphology - night vision - thermodynamics - echolocation A:
echolocation
(Question)
Answer the following question given this paragraph: Q: Through what system of the body do hormones generally travel? Choices: - respiratory - endocrine - excretory - circulatory system A:
(Answer)
circulatory system
Ques: Answer the following question given this paragraph: Human overpopulation, which is crowding out other species. It also makes all the other causes of extinction worse. Q: What phenomenon is crowding out other species and making all the other causes of extinction worse? Choices: - climate change - human suburbanization - migration - human overpopulation A:
Ans: human overpopulation
(Q).
Answer the following question given this paragraph: Q: What is the ultimate source of energy for all life on earth? Choices: - its core - Mars - the moon - the sun A:
(A).
the sun
Ques:Answer the following question given this paragraph: Your feet feel cold as you walk barefoot across the living room carpet in your cold house and then step onto the kitchen tile floor. This result is intriguing, since the carpet and tile floor are both at the same temperature. The different sensation you feel is explained by the different rates of heat transfer: the heat loss during the same time interval is greater for skin in contact with the tiles than with the carpet, so the temperature drop is greater on the tiles. Some materials conduct thermal energy faster than others. In general, good conductors of electricity (metals like copper, aluminum, gold, and silver) are also good heat conductors, whereas insulators of electricity (wood, plastic, and rubber) are poor. Q: There is a positive correlation between the ability to conduct thermal energy and what other energy, as exemplified by metals? Choices: - nuclear - gravitational - elastic - electricity A:

Ans:electricity
Answer the following question given this paragraph: Elastic rebound occurs when materials return to their original shape. Q: What happens when materials return to their original shape? Choices: - reverberation - second life - restoration principle - elastic rebound A:
elastic rebound