pick all c and just wing it
Answer:
the cascadia earthquake affect portland oregon could injured 27,000people displace 85,000,kill1,400and cause $37 billion in damage building
It means that the satellite's orbital period is equal to the Earth's rotation period ... roughly 23 hours 56 minutes 4 seconds ... so that the satellite always stays over the same longitude.
IF that satellite's orbit has also been carefully placed over the equator, THEN the satellite is in a 'geostationary' orbit. It appears motionless in the sky, and can be used to sell 900 channels of TV to people with little dishes that they never need to move.
Fossil Fuels. However, producing solar, water and wind power plants and generators cost a lot of energy, generated by fossil fuels. The problem is that 'green' energy sources don't repay the amount of energy used to make them. Fossil fuels are bad guys, but don't think placing solar panels everywhere will stop the greenhouse effect. Not until their efficiency is high enough to produce more energy than is put into them.
