The loss of rainforests would the greenhouse gases, thereby global warming."

The answer is ‘increase…increase’. Rainforests are huge carbon sinks. They take up carbon diode from the atmosphere for their photosynthesis. This regulates the amount of carbon dioxide, a greenhouse gas, in the air and hence reduces global warming. Loss of rainforests  causes an increase in carbon dioxide in the atmosphere and this increases the greenhouse effect that is the center of global warming.

2%? i tried finding the exact sorry if it's not 100% correct ; -;

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602