Blood? I know that if a blood vessel pops in your brain, you will most likely die. Dont get upset if it's the wrong answer. I've just heard it before.
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This is because of greenhouse gases and polution.
A producer (also known as an autotrophic plant) serve as a food source for other organisms within an ecosystem. They have the capability to produce their own food using photosynthesis.
The macromolecule would be glucose (sugar). C6H12O6
the loss of electrons is known as oxidation!