input: OPTIONS:
- Leptospirosis
- immunities
- Our immune system
- immunizations
- Veins and arteries.
- respiratory system
- Plant reproduction
- the body's largest organ Now, answer this question: Fact 1: HIV infects and destroys helper T cells. Fact 2: Helper T cells are the critical link in our immune system. Given the two facts above, what does HIV damage?
A:
output: Our immune system

Fact 1: Cells secrete acids and bases to maintain the proper pH for enzymes to work. Fact 2: Enzymes help to break down proteins so that the bacteria can do their thing better. Given the two facts above, why do cells secrete acids?

OPTIONS:
- Make money
- resistance activities
- allow growth
- Plant growth is reduced
- Break down proteins
- Hurt things
- increases a body's strength
- Help friends

Answer: Break down proteins

Problem: OPTIONS:
- dark corners
- soils
- outside
- on Mars
- mild
- indoors
- loose soil
- Light
Q: Fact 1: If something is outside during the day then that something will receive sunlight. Fact 2: Sunlight Green plants require sunlight in order to grow. Given the two facts above, where do green plants grow best?
Answer: outside

Problem:OPTIONS:
- cytoplasm
- Most plants
- bacteria
- alveoli
- virus
- organ
- Conifers
- phylum

Fact 1: Ribosomes are structures in the cytoplasm where proteins are made. Fact 2: Ribosomes and other organelles begin to duplicate . Given the two facts above, proteins are made in organelles within the what?
****
A: cytoplasm

Fact 1: Air pollution harms the respiratory and circulatory systems. Fact 2: Air pollutants are inhaled. Given the two facts above, what system does inhaled pollution harm?
OPTIONS:
- health
- humans
- the environment
- circulatory
- people
- bones
- lymphatic
- cell wall
circulatory

Fact 1: When electricity flows to a light bulb , the light bulb will turn on. Fact 2: Electricity is electrons in motion. Given the two facts above, what flows to a light bulb to turn it on?
OPTIONS:
- heat energy
- protons
- Solar energy
- neutrons
- direct energy
- energy
- electrons
- light switch

Answer:
electrons