15 points!
hey guys please help me as I am not sure if this is correct if it is please tell me

respiration:
uses oxygen
releases carbon dioxide into the air
converts food to usable energy

photosynthesis:
produces food for the plant
requires chlorophyll
used carbon dioxide and water

transpiration:
pulls water from roots to the leaves
returns water to the air
important part of the water cycle

sorry if this answer was too late ;)

1. aspect is nothing really because the answer is right in front of your face

It's either -limiting factors or -scarce resources but i'd go with my first answer since the food and water are abundant they really aren't scarce