input: OPTIONS:
- reproduction
- rating
- running
- Energy
- walking
- rapid expansion
- water conservation
- movement Now, answer this question: Fact 1: Algae have varied life cycles. Fact 2: Life Cycles Of Organisms Reproduction is a characteristic of all living systems. Given the two facts above, what are algae capable of?
A:
output: reproduction

Fact 1: Cutting down trees has a negative impact on an ecosystem. Fact 2: Students take a field trip to an ecosystem to observe the homes of animals in natural habitats. Given the two facts above, cutting down trees has a what on the homes of animals in natural habitats?

OPTIONS:
- neutral impact
- deforestation
- positive impact
- no impact
- threatened
- Decrease bodily water
- massive damage
- negative impact

Answer: negative impact

Problem: OPTIONS:
- Solid
- Density
- energy
- vapors
- O3
- fats
- Mass
- Sublimation
Q: Fact 1: Phase changes do not change mass. Fact 2: Melting is a phase change. Given the two facts above, what does not change during melting?
Answer: Mass

Problem:OPTIONS:
- Fuel cells
- using electricity
- animals
- Cooking
- organisms
- engines
- lightning
- solar power

Fact 1: Using a gasoline engine requires burning gasoline. Fact 2: Oil and gasoline are fossil fuels. Given the two facts above, what requires burning fossil fuels?
****
A: engines

Fact 1: Vertebrates are animals that have a backbone. Fact 2: Birds are warm-blooded vertebrates. Given the two facts above, what has a backbone?
OPTIONS:
- humans
- bacteria
- Man
- viruses
- insects
- birds
- plankton
- toads
birds

Fact 1: Macroevolution is evolution over geologic time above the level of the species. Fact 2: Microevolution leading to macroevolution, discussed earlier, is one example. Given the two facts above, what happens over time?
OPTIONS:
- root growth
- Change colors
- relocation
- evolution
- gases
- erosion
- fossils
- reproduction

Answer:
evolution