If you were to remove the decomposers all of the dead plants and animals on the ground floor would remain there and cause a build up of dead animals and plant matter not being removed via the decomposers
Your answers are D increase in deforestation, F rising sea levels, and E increasing use of fossil fuels.
A fault block mountain would form.
The two types of plates colliding would make them both rise up creating amountain that looks sort of looks like cards standing together.
The first option is correct.
Some other options say that malignant cancer is lethal and yes, but not strictly and not all the time.
Hope it helped,
Happy homework/ study/ exam!
