Answer:
Nature is the natural, physical, or material world or universe. Nature can refer to the phenomena of physical world, and also to life.
Environment
refers to external elements and conditions which surround, influence, and affect the life and development of an organism or population.
more comparison:
Nature is what's primarily available to you in it's pristine form , environment is what you make of it.
Nature is pure, supporting all forms of life and abundant resources while environment is shaped by human activities and more man-made, triggering scarcity and corruption of resources.
Nature is what we are gifted with and it includes everything while environment concerns more about your surroundings.
Nature is , as name suggests natural, but environment is what we live in , whatever is in our vicinity, for instance if your vicinity is polluted it's due to human activities hence we say polluted environment rather than nature.
