Heat must be added to make a reduction reaction.
I think it would either be c or d...
Internal fertilization protects<span> the </span>fertilized egg<span> or embryo from predation and harsh environments</span>
In the open ocean, especially around the surface, one of the main sources of food for fish would be the algae that grow at the surface & photosynthesize with the sun. Without fish to regulate the amount of surface algae, they overgrow and block the sun from the organisms on the coral reef.
Without sun, the reef is not able to sustain themselves & it's down hill from there.
I hope this helps!
I would say Satellites. Satellites are the only thing here I see can measure things globally, the rest is more regional.
