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A number of journalists has been/have been to the party this week.
A number of journalists have been to the party this week.
The number of months in a year is/are twelve
The number of months in a year is twelve
A number of students was/were interviewed in the competition
A number of students were interviewed in the competition
A number of streets in Baku is/are still known by their old names.
A number of streets in Baku are still known by their old names.
A number of activities has been/have been held by green organizations lately
A number of activities have been held by green organizations lately
The number of members of this company is/are approximately two thousand
The number of members of this company is approximately two thousand
The number of people depend/depends on many things on the Earth
The number of people depends on many things on the Earth
A number of wild animals is/are in danger of extinction now
A number of wild animals are in danger of extinction now
A number of children is/are at risk of diseases from water related diseases
A number of children are at risk of diseases from water related diseases
A number of rivers and lakes was/were poisoned in this country a few years ago.
A number of rivers and lakes were poisoned in this country a few years ago.
My mother will prepare a delicious meal tomorrow.
My mother will have prepared a delicious meal tomorrow.
Modern equipment will measure the smallest vibrations on the earth.
Modern equipment will have measured the smallest vibrations on the earth.
Scientists will find new ways to measure earthquakes
Scientists will have found new ways to measure earthquakes
They say the climate will change in the future.
They say the climate will have changed in the future.
Jack will finish his homework when his mother gets home
Jack will have finished his homework when his mother gets home
......comes from moving turbines or mills
wind energy
oil, gas, coal which contribute global warming while burning
geothermal
comes from flowing water in rivers, waterfalls and streams
hydroelectric
comes from the sun and can be saved using panels
solar energy
comes from splitting atoms, and produces dangerous waste
nuclear
unscramble --ciarucl
crucial
unscramble ltedimi
limited
unscramble- danemd
demand
unscramble eneyrg
energy
unscramble-popovertiulaon
overpopulation