Write F if the statement is a fact and O for opinion

1.plants produced oxygen
2.they add beauty to the surroundings.
3.plants cannot move on their own.
4.the mango has the swetest fruits.
5.grapes is the most expensive fruits.
6.plants need human for then to be healthy.
7.people need plants for them to live
8.plants best grow when watered everyday.
9.there are different kinds of plants
10.plants have different colors.
I need a answer please ​