Scientists define global warming as a rise in
the greenhouse gases in the atmosphere which cause
the earth to heat up. Carbon dioxide and other air
pollution that is collecting in the atmosphere like a
thick blanket, trapping the suns heat and causing
for all the humans. Last but not least, water is very significant to all living things, so if there is one thing
that makes humans care about global warming is the water.
Scientist usually say that global warming threatens health. This claim is being mad
the polar bears die. Polar bear biologist Lan Sirling has found a similar pattern in the Hudson
Bay. He fears that if the sea ice disappears, the polar bears will as well.
There are three types of air pollution. Some visible, some invisible and some that
EESA10- Human Health and Environment
Lecture 5- Heavy Metals and Human Health
All heavy metals are toxic. They are naturally occurring, extracted from the earth in ore
from the earths crust. We mine them and put them in an industry and use it