There are many ways to do this. You can either create a close approximation to what you think are the most relevant variables and hope your idea about the relevant variables was true.
Another way would be to do different kinds of experiments and hope you can deduce information from those experiments onto the subject that you would like to find an explanation for.
I think that the statement given above is true, Harmful environmental agents cause an average of 4-5 percent of birth defects. <span>About 10 </span>percent of birth defects<span> are </span>caused<span> by </span>environmental factors<span> such as infection, radiation, and drugs. Hope this answers the question. Have a nice day.</span>
So chickens are eateble but not humans unless theyre cannibalchick eggs are hard and theyre dont stay in mother stomach for long
Answer:
plants and algae make the own food and are called producers herbivours eat plants are called consumer carnivouros that eat herbivourous are called secondary consumer carnivouros that eat other carnivourous are called tertiary consumer
