Passive Voice sentences

Hello,

Could you please fill in these sentences?

1. In 1974 56 million tonnes of fish was/were taken from the earth's oceans.

2. Since then the number of fish taken from the oceans (rise) ... to 90 million tonnes a year.

3. This year the number of African elephants (fall) ... to 500000. The elephant is now one of thousands of endangered spieces which (seriously/threaten) ... .

4. Twenty-five years ago 100,000 sq. km of the earth's rain forests was/were lost each year.

Now every year approximately 170,000 sq. km of rain forest (destroy) ... .

5. The earth's population is now over 6 billion. Each year it rises/is risen by 95 million.

Thanks!