Unfortunately, when mercury gets into a food chain, it damages the nervous systems and reproductive systems of mammals, including humans. The diagram shows how mercury can accumulate in the food ...

What is a food chain? All living things including humans, animals and plants need energy to live. But, where do they get their energy from? The answer is easy - all living things get their energy ...

Well, besides all being fast food chains… They’re all red ... red logos might make it even harder to ignore. The average human can see ten million colors, but red is special.