Question: Q: What type of species have a large effect on the balance of organisms in an ecosystem? A:
OPTIONS:
- decomposers
- producers
- secondary consumers
- keystone
Answer: keystone

input with options: Q: Mutations which benefit the organism in which they occur are known as? A:
OPTIONS:
- extraordinary mutations
- helpful mutations
- healthy mutations
- beneficial mutations
output: beneficial mutations

Q: Q: Salt in seawater causes it to have greater what, which is also affected by temperature and pressure? A:

OPTIONS:
- mass
- volume
- area
- density

A: density

input: OPTIONS:
- grow
- build
- join
- divide Now, answer this question: Q: Aging occurs as cells lose their ability to do what? A:
A:
output: divide

Q: Milk is usually subjected to what process, where high temperatures denature the proteins in bacteria so they cannot carry out functions needed to grow and multiply? A:

OPTIONS:
- vaporization
- Cleaning
- crystallization
- pasteurization

Answer: pasteurization

Q: Q: Joules and calories are the units of what? A:

OPTIONS:
- weight and energy
- mass and potential
- heat and velocity
- energy and heat

A:
energy and heat