Answer:

1.) parasitic

Out of these, fleas and dogs share a parasitic kind of symbiosis. In this kind of relationship, one organism (in this case, fleas) lives on another (dogs) organism also called host organism, as a parasite. They keep extracting nutrients from the host body that benefits them but weakens the host body.

2.) Mutualism, a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals. Commensalism is a relationship between species in which one benefits and the other is unaffected.

3.) Animal cruelty encompasses a range of behaviors harmful to animals, from neglect to malicious killing. ... Intentional cruelty can run the gamut from knowingly depriving an animal of food, water, shelter, socialization or veterinary care to maliciously torturing, maiming, mutilating or killing an animal.

Explanation:

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