*Question*
Q: What is the area around the nucleus of an atom where electrons are likely to be, called? Choices: - electron wave - electron membrane - electron pocket - electron cloud A:
**Answer**
electron cloud

*Question*
Q: What must be overcome to change the motion of an object? Choices: - pressure - weight - density - inertia A:
**Answer**
inertia

*Question*
Q: Major exchange pools of carbon include organisms and what else? Choices: - location - duration - the intensity - the atmosphere A:
**Answer**
the atmosphere

*Question*
Q: In how many basic was can substances cross the plasma membrane? Choices: - one - three - four - two A:
**Answer**
two