Problem:OPTIONS:
- Spring
- cold
- Summer
- Autumn
- started
- Winter
- closed
- mild

Fact 1: When a hemisphere is tilted towards the sun , that hemisphere receives more direct sunlight. Fact 2: When the Earth's northern hemisphere is tilted towards the Sun, it is summer. Given the two facts above, what season is it when the hemisphere is aimed at the sun?
****
A: Summer

Problem:OPTIONS:
- Computer systems.
- Most plants
- animals
- Roundworms.
- mammals
- Art reproductions.
- insects
- Stuffed toy bears.

Fact 1: Roundworms make up the phylum Nematoda. Fact 2: Within the Nematoda, a range of reproductive systems occur. Given the two facts above, what has a range of sexual reproductive systems? ?
****
A: Roundworms.

Problem:OPTIONS:
- alleles
- retina
- species
- the sun
- plants
- astrology
- speciation events
- trees

Fact 1: Macroevolution occurs over geologic time above the level of the species. Fact 2: Speciation events are thus examples of macroevolution. Given the two facts above, speciation events are an example of something that occurs above the level of what?
****
A: species

Problem:OPTIONS:
- energy
- engines
- offspring
- waves
- currents
- adding heat
- moon units
- precipitation

Fact 1: Tidal energy can be used to produce electricity. Fact 2: Electricity travels in currents. Given the two facts above, what can tidal energy be used to produce?
****
A:
currents