Q: Natural selection can only take place if there is variation, or differences, among individuals in a population. importantly, these differences must have some genetic basis; otherwise, the selection will not lead to change in this? Choices: - fertilization - spontaneous mutation - mass extinction - next generation A:
next generation

Q: Macrophages and dendritic cells are types of what" Choices: - amoena cells - supercapacitor cells - mast cells - phagocytic cells A:
phagocytic cells

Q: Q: Carboxylic acids are weak acids, meaning they are not 100% ionized in what? Choices: - air - ethanol - liquid - water A:
A: water

Question: Q: The temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place is called? Choices: - occurring point - boiling point - last point - melting point A:
Answer: melting point

*Question*
Q: What are formed by the attraction between oppositely charged ions? Choices: - inept bonds - soluble bonds - magnetic bonds - ionic bonds A:
**Answer**
ionic bonds

Q: Q: Cooling or evaporation of what from the sea surface makes surface water dense? Choices: - dirty water - salt water - warm water - fresh water A:
A: fresh water