The correct answer is option C, that is, they are all consumers.
Consumers feed on producers or other consumers in order to thrive in the environment. For example, deer are herbivores that signifies that they consume only plants, that is, producers. Another example of consumers are black beers, which are scavengers and omnivores, that is, they will consume or eat anything.
That is an ionic bond.
Ionic bonds are the type of bonds where there is transfer of an electron from one atom to another. The electron is removed from one atom and attached to another.
An example is salt, which is composed of two elements namely sodium and chlorine. Sodium readily gives up one its electrons and chlorine readily accepts it. Before sodium loses the electron, it has a positive charge and after the electron is gone it becomes negatively charged.
Chlorine on the other hand is positively charged before accepting the electron but after it does so, it becomes negatively charged.
These opposite charges attract the two elements together to form a relatively strong ionic bond.
