Some parts of the ocean never receive sunlight.
Answer: true
B - When many individuals of the same species are available for mating.
And
C - When the individuals live in a stable environment in which they thrive.
Explanation:
Positive feedback occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly. Negative feedback occurs to reduce the change or output: the result of a reaction is reduced to bring the system back to a stable state.
When salt and sugar dissolve in water it is a physical change. The chemical makeup of the salt and sugar are not changed.
Physical change
A comet. It’s a smaller celestial body that’s composed of mainly ice and dust.