Problem: OPTIONS:
- water
- quicksilver
- helium gas
- melted iron
Q: Q: What do scientist's believe mercury's core is mostly made of? A:
Answer: melted iron

Problem:OPTIONS:
- ozone
- oxygen
- temperature
- carbon dioxide

Q: What has the burning of fossil fuels increased in the atmosphere? A:
****
A: carbon dioxide

Q: Anabolic reactions require energy, so they are considered what type of reaction? A:
OPTIONS:
- autotrophic
- exothermic
- hydrostatic
- endothermic
endothermic

Q: Plants generally transport carbohydrates from leaves to roots and other nonphotosynthetic organs in the form of what? A:
OPTIONS:
- glucose
- potassium
- chloride
- sucrose

Answer: sucrose

Question: Q: What are the male reproductive cells called? A:
OPTIONS:
- mucus
- ova
- plasma
- sperm
Answer: sperm

input: OPTIONS:
- theory
- hypothesis
- scientific motion
- scientific law Now, answer this question: Q: A statement that describes what always happens under certain conditions in nature is also known as what? A:
A:
output:
scientific law