Вставьте артикль,
где необходимо, объясняя его употребление в скобках


–  Photosynthesis
involves the uptake of – carbon dioxide, – water
and other nutrients by –  plants to form organic matter and oxygen .
Я не могу обїяснить почему так
There is a
wide variety of plant life in the rainforest
There have been
thousands of –  studies on the
effects of herbs
For centuries, ___ drugs
have been made from – animal and –  plant extracts