PLS HELP Which event might disrupt a stable ecosystem?

А) Green plants use chlorophyll to produce food.

B) An invasive species enters the environment.

С) Consumers eat producers.

D) Predators kill prey.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !

What conclusion can you draw from this experiment about the components of the black ink?