Problem: OPTIONS:
- producers
- phytoplankton
- passenger pigeons
- bacteria
- tiny crustaceans
- the Sun
- honeybees
- parasites
Q: Fact 1: Zooplankton are tiny animals that feed on phytoplankton. Fact 2: Many zooplankton are crustaceans. Given the two facts above, what can feed on phytoplankton?
Answer: tiny crustaceans

Problem:OPTIONS:
- energy usage
- heat energy
- Migration
- Temperature
- Pollution
- forces
- root growth
- deforestation

Fact 1: If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water. Fact 2: Many animals migrate, traveling to avoid bad weather, to find food, or to reproduce. Given the two facts above, when food and water decreases, what increases?
****
A: Migration

Fact 1: Most invertebrates have a nervous system. Fact 2: Insects are the most common invertebrates. Given the two facts above, what do most types of have nervous systems?
OPTIONS:
- complex
- animals
- cows
- insects
- goats
- protist
- bacteria
- sweat glands
insects

Fact 1: Gills are used for breathing water by aquatic animals. Fact 2: All aquatic animals require dissolved oxygen to breathe. Given the two facts above, what do aquatic animals need to survive?
OPTIONS:
- Water
- gills
- food
- air
- fishing
- desert
- history
- warmth

Answer: gills

Question: Fact 1: Cell division often causes growth. Fact 2: Mitosis is cell division. Given the two facts above, what causes the growth of a living organism?
OPTIONS:
- Accumulation of wealth
- Cell mitosis
- Starvation
- Organic compounds
- gene flow
- organic molecules
- Infections
- genetic material
Answer: Cell mitosis

input: OPTIONS:
- Calcium carbonate
- Decayed matter
- Sediment
- Drips of water
- Still water
- detritus
- calcite
- Tourists Now, answer this question: Fact 1: Stalactites are formed by deposition. Fact 2: Most stalactites are formed from drips of water. Given the two facts above, what are stalactites deposits of?
A:
output:
Drips of water