Q: By pulling out grass by its roots and over-grazing, livestock contribute to what negative process? A:
OPTIONS:
- migration
- evolution
- immigration
- erosion
erosion

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

Answer: activation

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

input with options: Q: What are the two basic types of combustion engines? A:
OPTIONS:
- gas and steam
- spark and steam
- diesel and internal combustion
- external and internal combustion engines
output: external and internal combustion engines

Q: Q: What is the term for an organism's underlying genetic makeup, consisting of both the physically visible and the non-expressed alleles? A:

OPTIONS:
- divergency
- trait map
- phenotype
- genotype

A: genotype

Q: The mostly subterranean lifestyle of stone plants reduces water loss from evaporation and inhibits what? A:
OPTIONS:
- reactions
- chlorophyll
- tissues
- photosynthesis
photosynthesis