Q: Rising air currents carry water vapor into what? Choices: - stratosphere - ionosphere - troposphere - atmosphere A:
atmosphere

Q: What is the term for the dark brown or black coating found on exposed desert rocks, which is formed of iron and manganese oxides? Choices: - desert patina - desert shadow - desert rust - desert varnish A:
desert varnish

Q: Q: How many more times likely are men to suffer from iron overload? Choices: - twenty times - eight times - two times - ten times A:
A: ten times

Question: Q: Small crustaceans exchange gases across thin areas of the cuticle; larger species have what to accomplish this? Choices: - noses - pores - lungs - gills A:
Answer: gills

*Question*
Q: How many dimensions can humans see in? Choices: - five - two - one - three A:
**Answer**
three

*Question*
Q: What is the difference in voltage across a resistor or other electrical devices called? Choices: - volt effect - falling voltage - power drop - voltage drop A:
**Answer**
voltage drop