In which of the following can hydrogen bonding occur?
A) in a pure acetone
B) in a pure formaldehyde
C) in a mixture of acetone and formaldehyde
D) in none of these cases
D
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Earth’s ____________ was formed from an ejection of debris caused by the collision of a planetary body with Earth. Fill in the blank(s) with the appropriate word(s)
What is environmental resistance?
A) The decline in population growth B) The effect of limiting factors on the environment C) The maximum population growth in an environment D) All of these choices
In the proto-solar system nebula, gravity pulled matter together to form larger bodies. As they collided, what happened to these bodies?
A) Oblique collisions caused individual bodies to spin. B) The objects temporarily broke apart and then reformed into large objects, cooling rapidly during the breakup period. C) The objects broke apart to form asteroids, much like a neutron colliding with a heavy atom produces fission. D) Immense heat was released within the colliding bodies as gravitational potential energy was converted to heat.
Coastal landform modifications are sometimes caused by a localized increase in the volume of water. The modification process is called ________
A) melting B) ocean currents C) stream outflow D) ice push E) wave action