Fact 1: Plant reproduction requires pollination. Fact 2: Insects are the natural pollinators. Given the two facts above, plant reproduction may require what?
OPTIONS:
- mitosis
- nutrients
- insects
- energy
- sunlight
- gene flow
- seeds
- Energy.

Answer: insects

Fact 1: Plasma is formed by electrons separating from atoms in stars. Fact 2: Gas Ionization Losing electrons ionizes the atoms in a gas. Given the two facts above, you cannot have matter in a plasma state without what?
OPTIONS:
- energy
- Energy.
- voltage
- ionization
- nutrients
- light
- heat energy
- kinetic energy

Answer: ionization

Fact 1: Ablack hole is formed by a high-mass star collapses. Fact 2: Black holes are considered to be spheres. Given the two facts above, what does a high-mass star collapsing form?
OPTIONS:
- forces
- a sphere
- a cube
- a circle
- dangerous
- an object
- comets
- nucleus

Answer:
a sphere