Which period of geological history marks a time of life rapidly becoming more complex for the first time and a time for which we have an extensive fossil record

Duane skis down a hill at an angle of 42°. He has a mass of 92 kg. What is the normal force on Duane?

Definition of physical property

Only using 10 ohm resistors come up with a way to make a battery catch fire

Do Earth's oceans gain or lose water, considering evaporation and precipitation together? How much?

Climate gets colder closer to the poles because a, the ice at the poles absorbs the Sun's rays. , atmospheric and oceanic clrulation patterns move cold air toward the poles. c, heat from the poles is transferred toward the equaror. d.

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.

What is cosmic microwave background radiation?

Ocean water has a salinity of 35 parts per thousand. Fresh water has a salinity of less than 0.5 parts per thousand. What can you conclude from this information? A. Ocean water is rich in salt minerals. B.

You decide to add up all the work you did yesterday. If you accomplished 10,000 newton·meters of work yesterday, how much work did you do in units of joules?

What causes day and night on earth?