Author Question: To be a widely used energy source for humans, some collected solar radiation must be A) used to ... (Read 22 times)

nevelica · **on:** Jul 16, 2018

To be a widely used energy source for humans, some collected solar radiation must be

A) used to produce electricity.
B) converted and stored.
C) recycled into fossil fuels.
D) used to heat water.

Question 2

Which of the following illustrates intraspecific competition?

A) A butterfly feeding on the nectar of a daffodil flower
B) A sea gull swooping down to snatch a fish from the water's surface
C) A tick and a flea sharing a dog's back
D) Male red-winged blackbirds defending limited nesting sites from other males