Clasificación de la Biblioteca del CongresoQC980-999

activism(42) anthropology(65) atmospheric(17) big book(72) biology(58) children(153) children's(184) climate(1,602) climate change(2,218) collapse(19) conservation(84) current events(58) disasters(29) earth(179) easy reader(45) eco(17) ecology(590) economics(106) education(56) educational(31) elementary(42) energy(117) environment(2,039) environmental(94) Environmental aspects(21) environmental degradation(10) environmental issues(36) environmental policy(52) environmental studies(33) environmentalism(297) ethical issues(7) experiments(99) fog(25) folklore(50) general science(22) geography(257) geology(110) global(20) global warming(1,547) globalization(29) Grade 2(28) green(96) history(743) human ecology(22) hurricanes(85) ice age(40) informational(159) juvenile(63) juvenile non-fiction(51) lightening(9) natural disasters(55) natural science(81) nature(800) oceanography(18) outdoors(30) photographs(35) picture book(289) planet(16) policy(34) politics(488) pollution(50) popular science(65) rain(260) reference(337) sailing(36) school(45) science(5,212) science and technology(32) science nonfiction(49) snow(168) spring(41) storm(41) storms(135) sustainability(221) the environment(8) usa(80) volcanoes(45) weather(5,545) wind(146)