Q: The energy a chemical reaction needs to get started is called what kind of energy? Choices: - function - conduction - fusion - activation A:
activation

Q: In humans, what period lasts from the ninth week of development until birth? Choices: - third trimester - plasma period - development period - fetal period A:
fetal period

Q: Q: What are the two basic types of combustion engines? Choices: - gas and steam - spark and steam - diesel and internal combustion - external and internal combustion engines A:
A: external and internal combustion engines

Question: Q: What is the term for an organism's underlying genetic makeup, consisting of both the physically visible and the non-expressed alleles? Choices: - divergency - trait map - phenotype - genotype A:
Answer: genotype

*Question*
Q: What causes oxides to decompose? Choices: - humidity - acidity - precipitation - heat A:
**Answer**
heat

*Question*
Q: In comparing two solutions of unequal solute concentration, the solution with the higher solute concentration is called what? Choices: - acetic - hypothermic - hydrophilic - hypertonic A:
**Answer**
hypertonic