input: OPTIONS:
- fish
- minerals
- erosion
- oxygen
- loose soil
- h2o
- rivers
- rain Now, answer this question: Fact 1: Asandbar is formed by water moving sediment downstream. Fact 2: Mineral sediments are normal. Given the two facts above, what does water move downstream to form a sandbar?
A:
output: minerals

Fact 1: Echinoderms lack a centralized nervous system. Fact 2: Echinoderms are represented by the starfish. Given the two facts above, what lacks a centralized nervous system?

OPTIONS:
- humans
- dogs
- our planet
- insects
- barnacles
- starfish
- birds
- Pesticides

Answer: starfish

Problem: OPTIONS:
- smell and taste
- biodiversity
- a building to live in
- regulated body heat
- a mate
- sense organs
- food and shelter
- a car
Q: Fact 1: An animal usually requires a warm body temperature for survival. Fact 2: Temperature Temperature is an measurement of the amount of heat. Given the two facts above, what do most animals need to be sure they survive on the Earth?
Answer: regulated body heat

Problem:OPTIONS:
- bacteria
- chlorofluorocarbons
- dormant bacteria
- gravity
- weathering
- hydrocarbons
- Organic compounds
- density

Fact 1: Endospores are commonly found in soil and water. Fact 2: Some bacteria have specialized dormancy structure, the endospore . Given the two facts above, what are commonly found in soil and water?
****
A: dormant bacteria

Fact 1: When light enters the eye through the pupil , that light falls on the retina. Fact 2: Pictures are formed on the retina, and are then transmitted by the optic nerve to the brain. Given the two facts above, when light enters the eye through the pupil, what structure transmits information to the brain?
OPTIONS:
- an electron lens
- vision
- coded genes
- iris
- optic nerve
- Neuron.
- nerves
- aperture
optic nerve

Fact 1: Mechanical weathering is when rocks are broken down by mechanical means. Fact 2: Pysical weathering is the mechanical breakdown of rocks. Given the two facts above, what is when rocks are broken down?
OPTIONS:
- roof weathering
- Plant growth is reduced
- brick weathering
- Physical weathering
- remains of prehistoric life
- at or near the margins
- home weathering
- major threat to health

Answer:
Physical weathering