What is a disadvantage of wind power?
a) Wind energy must be stored and brought to market.
b) Wind does not always blow.
c) Wind is caused by the uneven heating of the Earth by the sun.
d) All of the above
e) Only A and B
Question 2
Why do marine mammals look and behave similar to fish?
a) they both evolved from the same aquatic ancestor
b) they both have adapted for moving efficiently in water
c) Marine mammals learn from fish how to behave in the water
d) Both fish and marine mammals are top predators
e) Both fish and marine mammals are warm-blooded