In neurophysiology, the term summation refers to the addition of:

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

digestion

it excretes wastes