In 2009, agricultural production in africa had since 1960.
a. decreased by 10%
b. increased by 10%
c. increased by 20%
d. decreased by 30%

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

What was the land like over 500 million years ago? what was under the sea?

Which represents a negative impact of technology