LINGO

Ch. 20-21

all of the individuals of one species occupying a particular area

consists of fine particles such as dust, pollen, mold, ash and soot that are in the air.

a colorless, odorless gas found in car exhaust that contributes to air pollution and makes people ill.

the largest number of individuals of a particular species that the environment can support

substances that contaminate the environment.

Acidic moisture that falls to earth in the form of rain or snow.

scale used to measure how acidic or basic something is

the careful use of earth materials to reduce damage to the environment.

piling yard wastes where they can decompose gradually

substances with a pH lower than 7

using materials again

substances with a pH above 7

the clearing of forested land for agriculture, grazing, development, or logging

warm air traps cool air near the ground. This reduces the capacity of the atmosphere to mix materials

the hazy, yellowish brown blanket of smog that is sometimes found over cities – forms with the help of sunlight

the volume of water flowing past a point per unit of time. Increases when more water enters it’s channel

an area where each day’s garbage is deposited and covered with soil

Substance that contains human waste, household detergents and soaps

chemicals that help plants grow

wastes that are poisonous, cause cancer, or that can catch fire easily

pollution that enters water from a specific location such as a drainpipe or ditch

substances that destroy pests, to keep insects and weeds from destroying crops and lawns

pollution that enters a body of water from a large area, such as lawns, construction sights and roads

loose material, such as rock fragments and mineral grains, that is moved by erosion

Review Basketball!

Ch. 20-21

Paving land _____ stream dischargeDecreasesIncreasesPreventsDoes not affect

_____ are substances that contaminate the environment.EnzymesFossil fuelsPollutantsStream discharges

Population explosion refers to the _____Estimated world population in

2025Number of people who live in

povertyWorld population in 1810Increased rate at which the

population is growing

One cause of population explosion is _____Air pollutionPoor nutritionBetter nutritionCutting trees

A land use that does NOT cause environmental problems is _____Grazing livestockUsing herbicidesSetting aside natural preservesCutting trees

Recycling materials helps save _____EnergyLandfill spaceBothNeither

A growing population puts demands on the land for _____FoodLiving spaceLandfills for trashAll of the above

Composting means piling up grass and leaves so they can be _____Collected with garbageCollected separately from garbageAllowed to gradually decomposeUsed for cattle food

People can help protect the environment by _____ReusingRecyclingCompostingAll of the above

Earth’s population is rapidly increasing because of all of the following EXCEPT:Modern medicineRate of reproduction has

decreasedBetter sanitationBetter nutrition

_____ makes up 40% of the mass of trash.CompostFoodPaperAluminum cans

A combination of smoke and fog is _____OxygenAcid rainFossil fuelsSmog

Smog development is affected naturally by _____.The pH scaleThe greenhouse effectLandformsAll of the above

Sunlight reacts with waste gases to form _____.Carbon dioxideUltraviolet radiationOzoneNone of the above

A cause of acid rain is _____The exhaust from carsEmissions from coal burning

power plantsMoisture in the airAll of the above

Mountains may contribute to smog formation by _____Emitting sulfurous compoundsBlocking cloudsBlocking air circulationLimiting water runoff

Water pollutants include:PesticidesFertilizersSedimentAll of the above

Farms pollute water through the use of _____Pesticides and fertilizersHospital wasteCFC’sAll of the above