The answer is b I believe so
D. They do not produce electricity.
Passive solar heating is a technique where the sun's energy
is used for heating spaces. It does not generate electricity but can save substantial
electricity by making use of thermal mass. Materials that have a high density
such as concrete and bricks absorb and store electricity. Along with operable windows
and thermal chimneys, thermal mass is being
utilized to take advantage of sun exposure.
Where is the map my friend..
Thanks!
Answer: Phosphorus is naturally present in the earth and it is also added to the environment through other sources including fertilizers, detergents, and human and animal feces.
The radiating of the milky way
