handout

Task Listen and complete the sentences by circling the letter A, B, C or D Ecology is the study of _ human beings and their environment the environment and solar energy natural and alternative resources human beings and animals The natural environment consists of _ A.The oceans and the land B.All natural resources C The sun and the air D The air and the oceans If the resource can be _, it is called renewable A.replaced quickly B.divided properly C burnt quickly D used easily Grass for animals is a resource A.limited B.renewable C nonrenewable D clean According to the passage, coal is nonrenewable because it takes _ to make it A.billions of years B.three millions years C millions of years D three billions years Task Listen again to the last part of the talk and find the missing words Solar energy, air, and water are renewable resources because there is supply However, this definition may change if people are not careful with these resources The amount of solar energy that reaches the earth depends on the If the atmosphere is polluted, the solar energy that reaches the earth _ be dangerous If life is going to continue, the air must contain the correct amount of nitrogen (N), oxygen (O), carbon dioxide (CO2), and other _ If humans continue to pollute the air, it will not contain the correct _ of these gases Which group these sources of energy belong to? Put a tick () in the right column Sources of Renewable Nonrenewable energy Wind energy Gas Solar energy Petroleum Oil Geothermal heat Coal Ecologist Resources Renewable Fossil fuels Unlimited Fertilized