Monday
July 28, 2014

Homework Help: science help

Posted by kelsey on Monday, May 19, 2014 at 2:21pm.

1.how do fossil fuels contribute to air pollution ?

a) by releasing carbon dioxide into the air
b) by recycling oxygen
c) by reversing the greenhouse effect
d) by releasing nitrogen into the air

2. How can human population growth affect ecosystems like rain forests

a) human population growth causes a decrease in the use of resources from rain forests

b) human population growth causes an increase in the biodiversity of rain forests

c) human population growth causes an increase in the use of resources from rain forests

d) human population growth creates new rain forests species

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