Ecology Center

H

Ocean water, 8, 8; pollution of, 108, 108

Panther, 140, 140 Paper, recycling, 115 Parasitism, 22, 22 Pelican, 143, 143 Penguins, 39, 39 Permafrost, 69, 69 Pesticides, and habitat loss, 143 Petroleum, 95. See also Oil

(petroleum) pH, 103

Photosynthesis, 20, 22, 37, 38, 38; and energy, 50; and respiration, 49 act pH scale, 103 Pigeon, 130, 130 Pioneer species, 64, 65 Plains, 75

Planaria, feeding habits of, 25 lab Plant(s), and competition, 13 lab; and diseases, 128,128; diversity of, 128,128, 144-145 lab; growth of, 54-55 lab; houseplants, 63 lab; movement of, 17,17; and nitrogen fixation, 46, 46; photosynthesis in, 20, 37, 38, 38, 49 act, 50; and poison, 23; seed banks for, 143 Plastics, recycling, 113, 113 Poisons, 23 Polar regions, 8, 8, 10 Poles, of Earth, 39; South, 56 Pollutants, 102

Pollution, 102-110, 135-136; of air, 102, 102-106, 103, 104, 105, 111 lab, 135, 135; and nuclear power, 98; of soil, 109-110, 110; of water, 79, 79, 86, 86, 107, 107-108, 108, 135, 137 lab, 143 Ponds, 78, 78-79

Population(s), 10; biotic potential of, 16,17 lab; captive, 142, 142; data on, 10 act; growth of, 16-19, 17,18, 19, 26-27 lab; movement of, 17,17; size of, 13, 13-16,14 Population density, 13, 13 Potential energy, 97 Power, hydroelectric, 97; nuclear,

98, 98; wind, 98 Prairie(s), 75; life on, 10 Precipitation, acid, 103, 103, 103 lab, 135, 135, 135 lab; extreme amounts of, 56; and land, 68 Predators, 24, 24 Prey, 24, 24

Primary succession, 64, 64-65, 67 Producers, 20, 20, 34, 37, 51, 51 Ptarmigan, 69

Rabbits, 13, 14

Radiation, from Sun, 105, 105,

136; ultraviolet, 105, 136 Radioactive waste, 98, 110 Radon, 106, 106 Rain, acid, 103, 103, 103 lab, 135, 135, 135 lab; extreme amounts of, 56; and water pollution, 107, 107 Rain forests, destruction of, 146, 146; leaves in, 72 lab; life in, 8, 8; temperate, 71, 71; tropical, 68, 72, 72-73, 73; water in, 37 Rain shadow effect, 42, 42 Reading Check, 8, 9, 13, 15, 21, 23, 39, 46, 49,51,53,65, 72,74, 79, 83,95, 105, 110, 113, 115, 127, 128, 130, 138, 141, 143 Real-World Questions, 25, 26, 43,54, 76, 84, 111, 116, 137, 144

Recycling, 113, 113-115, 114 act, 115

Reducing, 112

Reintroduction programs, 142,

142 act, 143 Renewable resources, 94, 94-95, 95

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