Solar, wind and hydro power are forms of __________________. global warming sustainable development renewable energy greenhouses gases.
Our planet’s surface temperature has been increasing, which is called __________________. endangered species renewable energy global warming sustainable development.
When a species is in danger of becoming extinct it is considered to be an __________________. greenhouse gases endangered species sustainable development global warming.
_________________________are substances in the Earth’s atmosphere that prevent the release of heat into space, therefore maintaining heat retention in the atmosphere of the planet. global warming renewable energy endangered species greenhouse gases.
Wind Power is the _________________ of the wind’s forces into a useful form of energy. Mechanical power is made by _________________ and electricity is made by wind turbines. rays - solar panels force - irrigation conversion - windmills resource - turbines.
Solar Power is the conversion of sunlight into electricity. The sun’s _________________ are captured by ___________________ and converted into electricity. turbines - water rays - solar panels force - windmills consumption - wind.
Hydropower is the energy derived from the _______________ of moving water. Before electricity, hydropower was used for land _______________ and to operate machines. conversion - consumption windmills - energy solar panels - resources force - irrigation.
Global warming __________________ by an increase in greenhouse gasses. (cause / simple present) are caused was caused is caused were caused.
Many years ago, renewable energy _____________________ very expensive.(consider / simple past) is considered was considered were considered are considered.
The ice at the poles ________________________ by the warming of the Earth.(melt / present progressive) is being melted were being melted has been melted had been melted.
chemical mixture used to kill pests and insects pollution extinction smog pesticides.
contamination of water, air or soil with harmful substances pollution waste smog pesticides.
surroundings; conditions in which someone or something lives reforestation recycling environmet conservation.
process of replanting trees; reestablishment of a forest environment reforestation compost conservation.
mixture of smoke and fog waste pesticide smog pollution.
the process of dying out or having no living members in existence environment smog extinction pollution.
preservation, protection from decay and destruction reforestation recycling pollution conservation.
decayed organic material used as a fertilizer for growing plants compost waste environment pesticide.
reprocessing of waste to recover reusable material conservation reforestation waste recycling.
unusable or unwanted material smog waste extinction pollution.
By the year 2000, pesticides ___________________ for decades. (use / past perfect) has been used will be used had been used have been used.
A lot of smog _______________________ by cars since their invention. (produce / present perfect) won't be produced had been produced has been produced have been produced.
Hopefully endangered animals _______________________ by conservation activists.(save / future) was saved will be saved had been saved has been saved.
This is the paper ____________is to be recycled. whose who where which.
Sally is a teacher _______________ car creates a lot of pollution. who where whose which.
Ingrid is a girl _______________ always recycles. which whose where who.
The expression __________________ means to pay a lot for something in the long run run out day in and day out pay through the nose.
the expression _________________ means to think that what one sees is not real not believe one's eyes day in and day out in the long run run out.
The expression ____________________ means to use up the suplly, have no more left. pay through the nose in the long run run out day in and day out.
The expression ____________________ means eventually, in the end, ultimately in the long run pay through the nose day in and day out run out.