Answer: A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction. If we look at a system in homeostasis, a positive feedback loop moves a system further away from the target of equilibrium.
a solar eclipse, when the moons shadow comes between the sun and earth
I think B because it involved friction
Answer:
I think it will mean that the words of the question represent the key-words of your thesis. So you mustn't change the words of the question while writing your thesis
