Answer:
both inside and outside the nucleus
Answer:
A blood clot
Explanation:
It is formed to stop bleeding and foreign bodies from entering the body.
For the first question, I would say a line graph. And the one about the human heart, I need some more information.
An autotroph produces its own food while a hetertroph has to find it/hunt for it/gather it
Examples~
Autotroph-Sunflower
Heterotroph-Wolf