Q: Fact 1: Microscope is used to see small things by biologists by making them appear bigger. Fact 2: Bacteria are very small. Given the two facts above, what are used to see bacteria by biologists by making them appear bigger?

OPTIONS:
- an image
- photons
- tiny polyps
- periscopes
- amoebae
- microscopes
- x-rays
- telescopes

A: microscopes

input: OPTIONS:
- the production of cells
- preventing heat transfer
- To keep their body heat.
- the production of heat
- Generating heat
- recovery time from fatigue
- the production of cold
- the production of skin Now, answer this question: Fact 1: Shivering occurs when many muscles contract a little bit all at once. Fact 2: Involuntary contractions, shivering, cause the production of heat. Given the two facts above, what occurs when many muscles contract a little bit all at once?
A:
output: the production of heat

Fact 1: All chemical reactions require activation energy to get started. Fact 2: Chemical changes are a result of chemical reactions. Given the two facts above, what is required before a chemical change?

OPTIONS:
- kinetic energy
- energy usage
- activation push
- activation energy
- activation switch
- activation power
- Burning fuel and air
- Evaporation

Answer: activation energy

Problem: OPTIONS:
- our nearest star
- divided heart
- solid, liquid, gas
- Veins and arteries.
- kinetic energy
- flow of electrons
- reducing acid rain
- matter vibrating
Q: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Each side of the heart is divided up into two chambers. Given the two facts above, ish have a circulatory system with what?
Answer: divided heart

Problem:OPTIONS:
- alter composition
- kill them
- Movement
- friction
- lower the temperature
- change color
- push away
- electrically

Fact 1: Magnetism can cause objects to repel each other. Fact 2: If two things have the same charge, they repel, or push away from each other. Given the two facts above, magnetism can cause objects to do what to each other?
****
A: push away

Problem:OPTIONS:
- four limbs
- Energy.
- energy
- sarcasm
- skin
- keratin
- sawdust
- groceries

Fact 1: Mammals conserve body heat with their hair or fur. Fact 2: Hair and feathers are both made of keratin. Given the two facts above, what do mammals use to conserve body heat?
****
A:
keratin