Fact 1: Rivers are usually larger than streams. Fact 2: Watersheds are creeks, streams and rivers. Given the two facts above, what are rivers?

OPTIONS:
- dangerous
- storing water
- watershed
- kalenchoes
- they bend
- rainy
- kinetic
- strong

Answer: watershed

Problem: OPTIONS:
- babies
- sperm
- sugar
- animals
- erection
- eggs
- humans
- pregnancy
Q: Fact 1: Ejaculation occurs when muscle contractions propel sperm from the epididymes. Fact 2: Bacteria usually cause epididymitis. Given the two facts above, bacterial infection can inhibit ejaculation of what?
Answer: sperm

Problem:OPTIONS:
- It expands
- to make braids
- to wear a scarf
- to attract mates
- When it's cold
- to stay warm
- It remains dormant
- genetic diversity

Fact 1: Some animals' fur grows thicker for staying warm in the winter. Fact 2: Mammals have hair and fur. Given the two facts above, why do some animals have hair that grows longer during the winter?
****
A: to stay warm

Fact 1: Most plants continue to grow throughout their lives. Fact 2: Bamboos are vigorous, rugged plants. Given the two facts above, what happens to bamboo throughout its life?
OPTIONS:
- It helps them survive
- it has cellular respiration
- it dies and comes back to life
- it continues to grow
- it needs no water
- it keeps an organism warm
- flow of electrons
- the body's largest organ
it continues to grow

Fact 1: Sugar causes food to taste sweet. Fact 2: Children are naturally drawn to the sweetness of foods that contain sugar. Given the two facts above, what flavor are kids naturally drawn to?
OPTIONS:
- Spicy
- coffee
- Sweet
- Sour
- Bitter
- Oak
- corn
- mild

Answer: Sweet

input with options: Fact 1: Agreenhouse is used to protect plants by keeping them warm. Fact 2: Energy from the sun keeps the earth warm, enables plants to grow. Given the two facts above, greenhouses are used to what, using the energy from the sun?
OPTIONS:
- heat skin
- evaporation
- protect plants
- cool air
- spread flower seeds
- important habitats
- food and shelter
- reserve water
output:
protect plants