Question

1. scientists are only interested in climate changes that began in the 21st century.

true
false

1. about ____ percent of the u.s. food supply contains genetically modified foods.

10
25
44
66
85

Explanation:

1. Scientists study climate - change over long - term periods, not just starting from the 21st century.
2. A significant portion of the U.S. food supply is genetically modified, and about 85 percent contains such foods.

Answer:

1. False
2. 85