input: OPTIONS:
- solid, liquid, gas
- Earth orbiting the Sun
- competing for resources
- measure of growth
- more abundant
- it keeps an organism warm
- fur and fat
- competition Now, answer this question: Fact 1: Population density is the average number of individuals per unit of area or volume. Fact 2: Another measure of growth is population density. Given the two facts above, what is is the average number of individuals per unit of area or volume?
A:
output: measure of growth

Fact 1: Alight bulb converts electrical energy into light energy when it is turned on. Fact 2: Fluorescent light bulbs use half the electricity of standard bulbs. Given the two facts above, what do flourescent bulbs do?

OPTIONS:
- Change colors
- reproduce
- staying warm
- dormant state
- direct energy
- spread flower seeds
- use less energy
- duplicate itself

Answer: use less energy

Problem: OPTIONS:
- Animal survival
- allow growth
- weathering
- atmosphere
- loose soil
- ecosystems
- salt and water.
- oceans
Q: Fact 1: Freshwater biomes have water that contains little or no salt. Fact 2: Biomes are global ecosystems. Given the two facts above, what is freshwater habitats that contain little or no salt?
Answer: ecosystems

Problem:OPTIONS:
- life
- Inheriting genes
- security
- smoking tobacco
- electromagnetic energy
- safety
- heat or cold
- Destroy bridges

Fact 1: Cancer genes can be inherited. Fact 2: Breast cancer kills. Given the two facts above, what can kill?
****
A: Inheriting genes

Fact 1: Some precipitation that falls on land may soak into the ground, becoming groundwater. Fact 2: Rain is also known as precipitation. Given the two facts above, what falls on land, soaking into the ground and becoming groundwater?
OPTIONS:
- dead organisms
- river
- hydrogen
- floods
- rain
- H 2 O
- weathering
- h2o
rain

Fact 1: Webbed feet are used for moving faster through water by aquatic animals. Fact 2: Ducks are aquatic birds. Given the two facts above, what uses webbed feet for moving faster through water?
OPTIONS:
- squids
- humans
- h2o
- trout
- octopus
- insects
- ducks
- fish

Answer:
ducks