One effect of pollution on human life is to cause cancer.
lack of effect
The effect of a good allergy in human life is that you will always have to watch what you are eating, especially when someone else prepares your meals for you.
by apples flying
The effect of machinery on human life is that people were able to do work more efficiently and quickly
hockey improves life. its fun and keeps you fit.
Trash and other wastes
seasons change depending on how close your country is to the sun. They effect human life by what crops you can get in that season and the temperature can effect people too like they can get overheated in summer.
because it affects our resources.