*Question*
Q: What force holds together both types of star clusters? Choices: - weight - magnetism - inertia - gravity A:
**Answer**
gravity

*Question*
Q: Whan an alkene is aquired by an alkyl halide in an organic reaction, what kind of reaction is this? Choices: - migration - subtraction - extinction - elimination A:
**Answer**
elimination

*Question*
Q: At the earth's surface, the air pressure exerted on you is a result of the weight of what above you? Choices: - magnetic force - humidity - water - air A:
**Answer**
air

*Question*
Q: If only blue light strikes green leaves what happens to it? Choices: - it causes heating - it is reflected - it causes cooling - it is absorbed A:
**Answer**
it is absorbed