1) A ..................... is a group of ecosystems with Different climates and organisms. a) Rain forest b) Desert c) biome d) Grassland 2) The ....................... is the average annual temperature in an area that determines its biome. a) Weather b) Climate c) Weather and climate d) None of the above 3) What Determines the biome of an area? a) The Climate of the area b) The amount of precipitation in the area c) Both a and b d) None of the above 4) .is a leveled section of a hill used to grow crops and prevent erosion. a) Agriculture b) Photochemical smog c) Terracing d) None of the above 5) .........................is a thick, brownish haze formed when certain gases in the air react with sunlight. a) Agriculture b) Photochemical smog c) Terracing d) None of the above 6) ....................is the major chemical gas found in smog. a) CO2 b) NO c) O3 d) CO 7) ...............................is Formed as a Result of the Reaction of Water Vapor With Nitrogen Oxide. a) Sulfuric acid b) Oxalic acid c) Hydrochloric acid d) Nitric acid 8) ...............................is Formed as a Result of the Reaction of Water Vapor With sulfur Oxides. a) Sulfuric acid b) Oxalic acid c) Hydrochloric acid d) Nitric acid 9) ………………………is a colorless and odorless gas that forms when fuels are not completely burned. a) CO b) CO2 c) SO2 d) SO3 10) The structure of fertile soil contains layers including ............................ a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 11) which is the first layer of fertile soil? a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 12) which is the layer that is having plant roots? a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 13) which is the layer that is having more animals and plants? a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 14) which is the layer that is having dead grass and dead leaves? a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 15) All soils begin as ..................... a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 16) 5. ………………………. is the layer of soil where the most water and nutrients are absorbed by plant roots. a) Litter b) Topsoil c) Subsoil d) Bedrock e) Both a and b f) All a ; b ; c ; d are correct 17) Strip mining exposes soil and causes ………………….. a) Deposition b) Weathering c) Erosion d) All of the above 18) When soil becomes depleted, farmers usually apply fertilizers, which include ……………………… a) Pesticides b) Nutrients c) both a and b d) None of the above 19) The water and human wastes that are washed down sinks, toilets, and showers are called…………………………….. a) Spills b) Sewage c) Thermal Pollution d) CFCs 20) water used to cool machinery in factories can cause...................... a) Spills b) Sewage c) Thermal Pollution d) CFCs 21) ......................are a group of gases that can cause the creation of ozone Hole. a) Spills b) Sewage c) Thermal Pollution d) CFCs 22) The ………………………. protects people from the effects of too much ultraviolet radiation. a) Ozone b) Ozone layer c) Atmosphere d) All of the above 23) The ozone layer is about....................from earth's surface. a) 10-30 Km. b) 10-20 Km. c) 15-30 Km. d) 20-30 Km. 24) .......................is constantly destroyed and produced in the atmosphere. a) Oxygen b) CO2 c) Ozone d) None of the above 25) .......................is a waste gas released from cows into the atmosphere. a) Oxygen b) CO2 c) Ozone d) Methane 26) Chemicals that kill crop-destroying organisms are known as………………………….. a) Fertilizers b) Pesticides c) Both a and b d) None of the above 27) ..................are the soil's cure from nutrients depletion. a) Fertilizers b) Pesticides c) Both a and b d) None of the above 28) Water that causes erosion picks up particles of rock and sand or…………………………… a) Stones b) Dunes c) Deltas d) Sediments 29) .....................is the removal of Non-Renewable minerals from underground. a) Mining b) Deep Mining c) Strip Mining d) Erosion 30) One cause of desertification is………………………. when less rain than normal falls in an area. a) Erosion b) Deposition c) Drought d) Both a and b 31) ………………………… are pollutants released into the air. a) Chemicals b) Pesticides c) Fertilizers d) Emissions 32) …………………….and…………………..are 2 types of water pollution that can cause sickness and death. a) Radon and carbon dioxide b) Radon and carbon monoxide c) Mercury and benzene d) Both a and b 33) The process of restoring an area of land to a more productive state is called…………………… a) Agriculture b) Strip mining c) Land Reclamation d) Desertification 34) ……………… are dense cold forests found in upper regions of the Northern Hemisphere a) Deciduous forests b) Rain forests c) Tundras d) Boreal forests 35) ........................is extremely cold and dry. a) Deciduous forest b) Rain forest c) Tundra d) Boreal forest 36) Fires and drought are common in................... a) Boreal forests b) Savannah forests c) Grasslands d) Tundra 37) ......................Receives less than 25 Cm. of rain per year. a) Boreal forests b) Desert c) Grasslands d) Tundra 38) ....................Have grasses and dwarf trees. a) Savannah b) Desert c) Prairie d) Tundra 39) The ........................ Habitat receives more rain than a desert but only a few scattered areas of trees and shrubs. a) Savannah b) Desert c) Prairie d) Tundra 40) ..................takes place when a farmer plant the same crops each year. a) Erosion b) Desertification c) Nutrient Depletion d) Nutrients increase 41) The ................. of a saguaro cactus has folds that are similar to the pleats in an accordion ; it expands to store water when it is raining. a) Leaves b) Root c) Stem d) All of the above 42) ......................can live in burrows for weeks. a) Lizards b) Fennec foxes c) Gila monsters d) All of the above 43) ......................should adapt to extremely hot conditions. a) Lizards b) Fennec foxes c) Gila monsters d) All of the above 44) .........................can damage cars body and stones to melt. a) Rain b) Radon c) Photochemical smog d) Acid Rain 45) The………………………..Desert in central Asia, have a yearly average temperature that is below freezing. a) Gobi b) Scorching c) Namib d) Both a and b 46) …………………Are 2 types of Rain Forests. a) Deciduous and boreal b) Tropical and Temperate c) Cedars and Firs d) Boreal and Tundra 47) The process by which water, wind, or ice moves soil or particles of rocks is called…………………………………Are 2 types of Rain Forests. a) Weathering b) Erosion c) Deposition d) Drought 48) Using land to grow food crops is an example of………………… a) Agriculture b) Erosion c) Deposition d) Drought 49) …………..Is the tallest layer of the rain forest which receives most sunlight and can reach up ……… meters. a) Emergent / 50 b) Emergent / 60 c) Emergent / 70 d) Emergent / 80 50) …………..Is the shortest layer of the rain forest where few plants can live. a) Emergent b) Canopy c) Understory d) Forest Floor

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