Which of the following are items that are a threat to biodiversity?
pollution and succession
habitat loss and predation
poaching and habitat loss
succession and poaching

Answer on that is... POACHING AND HABITAT LOSS!

Why? Poaching is the act of modifying something. And Habitat Loss is basically self explanatory, it's loss of an environment.

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BM :)

Poaching and habitat loss

Explanation:

Biodiversity refers to the different varieties of organisms that are found in a given ecosystem.

There are various threats to the biodiversity and poaching and habitat loss are major ones.

Poaching refers to the hunting of animals or capturing them in an illegal manner and habitat loss is the loss of available area where the organisms can live.

Both poaching and habitat loss contributes to a loss of biodiversity as poaching directly kills the animals whereas habitat loss indirectly leads to their decline.