The producers of an ecosystem make energy available to all the other living parts of an ecosystems. Consumers like humans eat the food that producers like plants made decomposers decompose dead plants and animals when they die like bacteria is a decomposer
The answer is A. A fission nuclear reactor is controlled by regulating the number of neurotoxins produced in the chain reaction. Too many neutrons cause an accelerated chain reaction that causes enormous heat to be generated in a short amount of time which could cause an explosion. Control rods , made of “neutron poisons”, e.g. cadmium, are put in the reactors to control the number of neutrons at any one time