Q: Name the one metal that melts below room temperature? Choices: - aluminum - gold - bronze - mercury A:
mercury

Q: Rapidly produced genetic vairants are found in organisms with what type of generation time? Choices: - long - repeating - oscillating - short A:
short

Q: Q: The mass of atoms is based on the number of protons and neutrons in what? Choices: - electrons - molecules - components - nucleus A:
A: nucleus

Question: Q: What number is the sum of the numbers of protons and neutrons present in the nucleus of an atom? Choices: - nuclear number - combined number - mass total - mass number A:
Answer: mass number

*Question*
Q: What do you call elements that contain only atoms of one type of element? Choices: - typical elements - noble gases - reactive elements - native elements A:
**Answer**
native elements

*Question*
Q: Which part of a leaf contains openings known as stomata, through which the exchange of gases takes place? Choices: - stoma - cuticle - phloem - epidermis A:
**Answer**
epidermis