If products made from petroleum are a big contributor to landfill waste, then products made from what are a big contributor to landfill waste? Answer choices: - burning coal - acetic acid - tin - hydrocarbons - brass - Pesticides - petroleum - recyclables
petroleum

If scales are used for protection by fish, then what are used for protection by fish? Answer choices: - scales - fins - streams. - coral - gills - Collagen - mussels - whiskers
scales

Q: If tactile sense is the ability to sense pressure, then tactile sense is the ability to sense what? Answer choices: - heat or cold - color - sound - pressure - environment - light - movement - heat
A: pressure

Question: If time and energy are one way animals learn to behave, then what is one way animals learn to behave? Answer choices: - garbage - Generating heat - Space travel - running and lifting - Time and energy - exercise - money - Riding a bike
Answer: Time and energy

*Question*
If agas in the air condensing in clouds causes rain, then what condenses in clouds to cause rain? Answer choices: - evaporation - chlorofluorocarbons - Organic compounds - carbon dioxide - a gas in the air - Chemical energy - peachleaf willow - flooding
**Answer**
a gas in the air

(Question)
If sand dunes can be formed by pressure differences, then sand dunes can be formed by? Answer choices: - air mass over Earth's surface - movements in the earth's crust - The bending of a ray of light - Movement of an air mass - pressure differences. - Physical weathering - looseness of dirt or compost - remains of prehistoric life
(Answer)
pressure differences.