Fact 1: Natural disasters can cause animals to leave an environment. Fact 2: Life in a volcanic environment can nevertheless be treacherous for animals. Given the two facts above, what type of terrain has little wildlife? ?

OPTIONS:
- Woods
- Volcanic
- Flatland
- Winter
- dry and hot
- threatened
- Steppe
- lack

Answer: Volcanic

Fact 1: Lymphocytes are the key cells involved in the immune response. Fact 2: Lymphocytes are produced in the bone marrow. Given the two facts above, where are the key cells involved in the immune response made?

OPTIONS:
- bloodstream
- humans
- mitosis
- bone marrow
- organs
- Epidermis
- critical organs
- stomach

Answer: bone marrow

Fact 1: If an object reflects light toward the eye then that object can be seen. Fact 2: Objects are seen by virtue of scattered light. Given the two facts above, by virtue of what can objects reflects light toward the eye?

OPTIONS:
- sunlight
- scattered light
- bright light
- destroyed light
- sensory neurons
- Electrical energy
- flow of electrons
- speckled light

Answer: scattered light

Fact 1: Bacteria in soil convert atmospheric nitrogen into a form usable by plants. Fact 2: Plants are the primary producers on earth. Given the two facts above, bacteria in the soil convert what type of gas into a form that is used by producers?

OPTIONS:
- energy
- burning
- food
- Energy.
- nitrogen
- nutrients
- Cooking
- a solute

Answer:
nitrogen