front 1 Water pollution | back 1 waste, chemicals, or other particles cause a body of water (i.e. rivers, oceans, lakes) to become harmful to the fish and animals that need the water to survive. |
front 2 Pesticides | back 2 substances we use to control or kill pests like weeds, insects, rodents, or bacteria — anything we don't want to have around. Sometimes these will work too well, harming the intended pest as well as other plants, animals, and even people. |
front 3 Glaciers | back 3 huge,thick masses of ice which form when lots of snow falls in one location for many years . This compressed snow becomes ice |
front 4 Greenhouse Effect | back 4 a process that occurs when gasses in Earth's atmosphere trap the Sun's heat. |
front 5 Global Warming | back 5 a process that causes the Earth to become hotter . These activities such as driving cars, using fossil fuels, working in factories and agriculture, cause an increase in the gasses that keep the Earth warm |
front 6 Sea Level | back 6 a term used to describe the usual height of the ocean |
front 7 Deforestation | back 7 when forests are converted for other purposes by cutting down the trees to clear the land for other use. |
front 8 Ice Sheets | back 8 a large mass of glacier ice that covers an area of more than 50,000 square kilometers (19,000 sq mi). |
front 9 Icebergs | back 9
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front 10
| back 10 Ice that originates on land; examples include icebergs, glaciers, ice sheets, and ice shelves |
front 11 Sea Ice | back 11 frozen ocean water which forms, grows, and melts in the ocean |