Answer:
Without trees, humans would not be able survive because the air would be unsuitable for breathing. If anything, people would have to develop gas masks that filter the little oxygen that would be left in the air. ... Anyway, trees take carbon from the atmosphere through photosynthesis in order to make energy
Explanation:
Answer:
ans 6. (clean) are being cleaned
ans 7. ( finish,not ) wouldn't be finished
ans 8. ( turn on ) (I don't understand the question as I think the correct ) sentence would be....why was the tv turned on .no one was watching it
ans 9. ( remodel,not ) wasn't remodeled
ans 10. ( must leave ) must be leaved / must be left
ans 11. ( test ) was, being tested
ans 12. ( sell ) ( I think in this you don't need to fill anything as the sentence is correct itself ) the last umbrella was sold last night
ans 13. (not allow ) would be not allowed
hope this are correct :)
If you want something I suggest about manatees?