Unit 6

Elf

100

these invasive species were accidentally introduced into the Great Lakes by ocean-going ships. They out-compete native species for food and space and disrupt food chains. 

zebra mussels

200

Humans sometimes intentionally hunt or remove a species from its habitat through this process

direct harvesting

300

death of an entire species

extinction

400

animals at the risk of becoming extinct are known as being in ___

endangerment

500

the diversity of life

biodiversity

Rudolph

100

the accumulation of toxins in organisms up a food chain is called

biomagnification

200

an animal that feeds on plants

herbivore

300

was the first widely used pesticide. It was sprayed on crops to kill insects, pests and disease-causing mosquitoes. It was easily absorbed and stored in plant and animal tissues

DDT

400

the time period around when the pesticide DDT was banned

early 1900s

500

the wise management of resources and preservation of ecosystems and biodiversity.

conservation

Dasher

100

using natural resources at a rate that does not deplete them

sustainability

200

means to avoid using a resource or limiting your consumption of a resource

reduce

300

means to use the same product over and over again instead of throwing it away after one use

reuse

400

means to discard a product in a way that can be used again

recycle

500

burning fossil fuels produces CO2 and other harmful substances known as ___

pollutants

Dancer

100

pollution of the hydrosphere

water pollution

200

pollution of the geosphere

land pollution

300

pollution of the atmosphere

atmosphere

400

these pollutants are associated with climate change and destruction of parts of the atmosphere

air pollutants

500

occurs when toxic chemicals are dumped into bodies of water such as lakes, rivers, and oceans

water pollution

Snowman

100

a common form of water pollution and involves the dumping of hot water into cooler freshwater resources (usually lakes or rivers). 

thermal pollution

200

precipitation that is more acidic than normal

rain

300

acid rain can be as acidic as this fruit

lemon juice

400

these 2 gases are released when fossil fuels are burned (hint not CO2 because that is a gas compound and not individual gases)

sulfur and nitrogen

500

chemicals that have been used as coolants in refrigerators and air conditioners. They have been used as propellants in aerosol cans and fire extinguisher and in the production of plastic foams

CFCs