What type of ecological relationship can be described as a win-lose scenario?

In ecological terms, parasitism is indeed characterized as a win-lose scenario. In this relationship, one organism, the parasite, benefits at the expense of the host organism. The parasite derives resources or nutrients from the host, which can lead to harm or even death for the host over time. For example, ticks feeding on the blood of mammals or tapeworms residing in the intestines of their hosts illustrate this relationship. In contrast, mutualism involves both organisms benefiting, commensalism involves one benefiting while the other remains unaffected, and competition occurs when two organisms vie for the same resources, which can potentially harm both. Thus, parasitism distinctly fits the win-lose dynamic where one party thrives at the cost of another.