What gas makes up more of the atmosphere?
Nitrogen (78%)
What term describes a species that is at risk of becoming extinct?
endangered
what type of waste can naturally break down?
biodegradable
What renewable energy source comes from sunlight?
solar
What is the largest ocean on Earth?
Pacific
What layer of the atmosphere protects Earth from harmful UV radiation?
Ozone
What is the illegal hunting or capuring of wild animals called?
poaching
what term describees turnig food scrapts into nutrient-rich soil?
composting
What energy source uses moving air to generate electricity?
wind
What process turns ocean water into water vapor?
evaporation
What term describes gases that trap heat in Earths atmosphere?
Greenhouse gases
What term describes a species that plays a critical role in maintaining an ecosystem?
keystone
what do we call using something again instead of throwing it away?
reuse
what fossil fuel is commonly used to power cars?
gasoline
what do we call areas where freshwater and salt water mix?
estuaries
What phenomenon describes the long term shift in Earths average weather patters?
Climate change
What do we call the natural home of an animal?
what process turns old materials into new products?
recycling
what type of energy comes from moving water?
hydropower
what is a the buildup of plastic and trash in the ocean called?
pollution
What climate pattern involves unusally warm Pacific Ocean tempertaures that affect global weather?
(Hint: it is happening right now)
El Nino
what do bees help plants do?
pollinate
what do we call waste that is buried underground in large disposal areas?
landfill
what do we call energy sources that can naturally replenish themselves?
renewable
What percentage of Earths surface is covered by water?
71%