I believe it is pollution that is destroying the ozone layer.
The native is the best way
Environmental science is a branch of biology focused on the study of the relationships of the natural world and the relationships between organisms and their environments. An example of environmental science is the study of the natural world and how it relates to recycling and mulching.
B. Gray squirrels
because in the food chain a primary consumer is an animal that feeds on plants; a herbivore.