Fact 1: Population size influences the chances of a species surviving. Fact 2: Flowers Includes All Plant Species. Given the two facts above, population size influences the chances of what surviving?
OPTIONS:
- density
- volume
- flowers
- animals
- crocodiles
- ducks
- plants
- oxygen

Answer: flowers

Fact 1: Marine species live mainly in shallow coastal waters. Fact 2: Killer whales prefer shallow and colder coastal waters. Given the two facts above, what are killer whales?
OPTIONS:
- red and black
- They have thick fur
- dangerous
- sharks
- deep sea creatures
- marine species
- Absorb light
- animals

Answer: marine species

Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. Fact 2: Animals with backbones are called vertebrates. Given the two facts above, amphibians are the first true what with four limbs?
OPTIONS:
- members of their own species
- to move people
- warm-blooded
- Due to their feet
- animals with backbones
- remains of prehistoric life
- Something to move
- Generating heat

Answer:
animals with backbones