Which process is responsible for the formation of Earth?
a. Accretion of small bodies called planetesimals
b. Conglomeration of dust and gas in the solar nebula
c. Collision of two medium-sized moons
d. Massive eruptions of magma which built up Earth’s rocky surface
e. Implosion of a nearby supernova
a
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Suppose you deflate a bicycle tire by depressing the air valve. Why does air rush out of the tire? After the air stops rushing out of the tire, is the tire empty? Explain your answer.
What will be an ideal response?
Which characteristics are most often associated with passing cold fronts? Select all that apply.
- Air becomes cooler after its passing
- Air becomes warmer after its passing
- Cold air forced under warm air
- Decreasing air pressures
- Heavy rainfall upon passage
- Increasing humidity after passing
- Warm air forced under cold air
The rising tide is also known as the ____________________ tide. The falling tide is known as the
____________________ tide. Fill in the blank(s) with the appropriate word(s).
Tropical rain forests cover only 5% of the earth's land surface but may contain at least half of the earth's known terrestrial plant and animal species.
Answer the following statement true (T) or false (F)