I've found that 'climate change' activism leads with wealth redistribution, social justice, and even socialism in a general sense. Biodiversity activism, on the other hand, tends to organize around reducing anthropogenic sources of CO2/CH4, establishing wildlife corridors, protecting watersheds, and so forth.

Both are valid and there's obviously a lot of welcome, positive alignment.

How are sea microplastics and climate change not related? Both involve fossil fuel materials being left somewhere they shouldn't when we are "done" with them.

In one case the fossil fuels contribute to climate change, in the other case it doesn’t.

Let me say that again: why don't you think the plastics are changing the climate?

Because as long as you don't burn them, they don't release any gases that contribute to the greenhouse effect. Could you explain any mechanism that make plastics in nature contribute to the climate catastrophe?

They are both under a broader banner of pollution.

And?