Solar energy is one of the cleanest and most plentiful sources of energy.
Solar power depends on sunlight,so in cloudy weather and at night,no power is generated.
Wind energy is only useful in places where there is a lot of wind
Wind turbines convert the kinetic energy of the wind into mechanical power
Nuclear energy is efficient and doesn't produce carbon gases as a waste product.
The dangers of nuclear power include deadly radioactive waste products.
A major source of energy comes from the burning of fossil fuels,such as coal and oil.
When we burn fossil fuels,waste gases,such as CO2 are produced.
Fossil fuels remain the largest source of energy for most countries.
Hydropowe comes from the kinetic energy of falling water
Output is reliable and can be regulated to meet the demand.
Dams are expensive to build and affect wildlife such as fish.
One of the main problems we face is how to reduce the use of fossil fuels to produce energy.
We need to reduce the use of fossil fuels to produce energy.
Nouns and pronouns can be used to represent any object.
We use pronouns to refer to or take the place of a noun.
Verbs are used to express actions,such as to sit down or stand up.
Adverbs express the quality of an action,such as how well or poorly something is done.
We use adverbs to describe actions,such as to run fast or walk slowly.
We use conjuctions to connect things or actions,such as to read and write.
We use adjectives to describe objects,such as a tall building.
Adjectives are used with nouns and pronouns,but not with verbs.
Words that are nouns or pronous are used to represent objects
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