Q: Through which process do behaviors that improve fitness increase? Choices: - mutation - succession - adaptation - natural selection A:
natural selection

Q: What is another term for dry ice? Choices: - liquid nitrogen - ice crystals - carbonated ice - solid carbon dioxide A:
solid carbon dioxide

Q: Q: What do atoms make by rearranging their chemical bonds in a reactant? Choices: - solutions - compounds - minerals - products A:
A: products

Question: Q: What basic structures are called the building blocks of life and comprise all living things? Choices: - pigments - seeds - lipids - cells A:
Answer: cells

*Question*
Q: The field of organic chemistry studies the structure and reactivity of compounds containing what element? Choices: - nitrogen - hydrogen - oxygen - carbon A:
**Answer**
carbon

Q: Q: Air pollution can cause disease of what system by affecting the health of your lungs? Choices: - excretory - digestive - cardiac - respiratory A:
A: respiratory