There are different types of observers. Casual observers differ from scientific observer. Seeing and observing are two different things. Not that everybody seeing is actually observing the thing.
A casual observer just sits back and watch for something to happen while a scientific observer comes up with some hypothesis to work on it.
Systolic Pressure is the amount of pressure in your arteries during contraction of the heart muscle.
Answer:
Explanation:
Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodium protozoa cause malaria.
Answer:no
Explanation: Because the tears are made of a special salt that needs to come out of you to make you healthier
Answer:
It's producers because those are the one's that sell them to the consumers.