Q: Population growth is determined by rates of birth, death, immigration, and what else? A:
OPTIONS:
- excitation
- relaxation
- exploitation
- emigration
emigration

Q: Lipids are also know by what name? A:
OPTIONS:
- sugars
- proteins
- acids
- fats

Answer: fats

Question: Q: Nearly all fish reproduce sexually and have what? A:
OPTIONS:
- modified sexes
- flexible sexes
- single sexes
- separate sexes
Answer: separate sexes

input with options: Q: An estimated 100 trillion of these live in the gut of an average person? A:
OPTIONS:
- viruses
- pathogens
- algae
- bacteria
output: bacteria

Q: Q: What large carboxylic acid with three ionizable hydrogen atoms gives some fruits a sour or tart flavor? A:

OPTIONS:
- ammonia acid
- beryllium acid
- hydrochloric acid
- citric acid

A: citric acid

Q: What is the term for chordates with a vertebral column and endoskeleton of cartilage and bone? A:
OPTIONS:
- am
- insect
- mammel
- vertebrate
vertebrate