Fact 1: Biomass is the total mass of organisms at a trophic level. Fact 2: Trophic level refers to the organisms position in the food chain. Given the two facts above, what is biomass the total mass of?
OPTIONS:
- remains of prehistoric life
- nutrients
- dead weight
- organisms on the food chain
- Microscopic organisms
- h2o
- sub-units of species
- The number of individuals
organisms on the food chain

Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Sandy and dusty surfaces get hotter during the day, like beach sand. Given the two facts above, what is a beach formed by?
OPTIONS:
- movement of tectonic plates
- heat change
- mechanical weathering
- By coral exoskeletons
- seasonal changes
- patch reefs
- sedimentation
- Nurseries of the ocean.

Answer: mechanical weathering

Question: Fact 1: Earth 's tilt on its rotating axis causes seasons to change. Fact 2: Seasons are divided into fall, winter and spring. Given the two facts above, what does earth's tilt rotating on its axis cause to change?
OPTIONS:
- organisms and their habitat
- fall, winter, and spring
- distance to the moon
- the environment
- distance to the sun
- a tree falling
- degrees celcius
- composition of h2o
Answer: fall, winter, and spring

input with options: Fact 1: Sex hormones are chemical messengers that control sexual development and reproduction. Fact 2: Androgens are male sex hormones. Given the two facts above, androgens control sexual development and reproduction in who?
OPTIONS:
- animals
- viruses
- insects
- humans
- females
- males
- plants
- estrogens
output: males

Q: Fact 1: Wetlands are extremely important biomes. Fact 2: Animals live on the vegetation found in the biomes. Given the two facts above, which living creatures can be found in wetlands?

OPTIONS:
- Animals
- ferns
- ducks
- Oceans
- trees
- Rivers
- Lakes
- crocodiles

A: Animals

Fact 1: Sexual reproduction increases genetic diversity. Fact 2: During sexual reproduction genetic material is exchanged between pairs of genes. Given the two facts above, what is a result of genetic material being exchanged during reproduction?
OPTIONS:
- sperm
- pollen
- Diversity
- mutations
- flowers
- chromosomes
- seeds
- gene flow
Diversity