Q: Fact 1: Thick fur can be used for keeping warm. Fact 2: Otters have thick fur coats and whiskers. Given the two facts above, otters need their what to keep warm? | OPTIONS:
- rocks
- fats
- Limbs
- feet
- drift wood
- hair
- coats
- seaweed
A: coats

Q: Fact 1: Bivalves feed on plankton and nonliving organic matter. Fact 2: Scallops, oysters and clams are bivalves. Given the two facts above, what feeds on plankton and nonliving organic matter? | OPTIONS:
- sharks
- density
- clams
- spiders
- gills
- seaweed
- animals
- fungi
A: clams

Q: Fact 1: Chloroplasts are organelles that are found in the cells of plants and algae. Fact 2: Chloroplasts Chloroplasts contain photosynthetic pigments. Given the two facts above, which of these can be found in organelles? | OPTIONS:
- photosynthetic pigments?
- plants
- algae
- the digestive system
- metabolic reaction
- A compound that donates proton
- sensory neurons
- excrement
A: photosynthetic pigments?

Q: Fact 1: Having no natural predators increases population size. Fact 2: Organisms have to be better adapted as population size increases. Given the two facts above, what does having no natural predators mean creatures have to be? | OPTIONS:
- Echinoderm.
- animals
- heterotrophs
- Echinoids
- slow and inefficient
- better adapted
- threatened
- dangerous
A: better adapted