Problem:OPTIONS:
- food
- energy
- heat
- electricity
- photons
- Energy.
- gas
- sunlight

Fact 1: Energy enters ecosystems in the form of sunlight or chemical compounds. Fact 2: Compounds or molecules Chemical compounds are combinations of elements. Given the two facts above, what enters ecosystems in the form of sunlight or combinations of elements?
****
A: energy

Problem:OPTIONS:
- Energy.
- Plankton
- Energy
- Oysters
- glucose
- Clams
- Fish
- barnacles

Fact 1: Bivalves feed on plankton and nonliving organic matter. Fact 2: Clams and oysters are examples of bivalves. Given the two facts above, what do clams and oysters eat?
****
A: Plankton

Problem:OPTIONS:
- direct damage to the lungs
- Abnormal cell growth
- enormous damage to homes
- They may provide humans with food.
- massive damage
- They may not survive.
- They will always survive.
- they may befriend the humans.

Fact 1: If humans disturb animals in a location then those animals will move to a different location. Fact 2: Animals may not survive in new location. Given the two facts above, what might happen to animals disturbed by humans?
****
A: They may not survive.

Problem:OPTIONS:
- Allergies
- cancer
- blood
- flu
- disease cells
- anemia
- Smoking
- illness

Fact 1: Cancer genes can be inherited. Fact 2: Genetic diseases are diseases that are inherited. Given the two facts above, what can be a disease with genetic traits?
****
A:
cancer