The burning of fossil fuels produces

a. land pollution.

c. acid rain only.

b. air pollution only.

d. acid rain and air pollution.

Amy swims 500 m (0.5 km) in 6 minutes (0.1 hour). What was her speed in kilometers per hour?

How does temperature affect the speed of sound in the air

How does the conservation of energy deal with the flash's supersonic punch? For a physics project

The Astronomer Carl Sagan is famous. Why?

How can the mentos and soda experiment effect the real world?

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What two factors determine how fast weathering occurs