The types of biodiverstiy discussed in the video are: A. ecosystem health, ecosystem diversity,
B. dogs, lady bugs, mushrooms
C. species diversity, ecosystem diversity, genetic diversity
D. none of the above

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Gunpowder residue is most likely to show up where on a shooters hands

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.