Question

how are invasive species typically introduced into new habitats?
by strong winds and storms
by fungi and bacteria
primarily by human actions

Explanation:

Invasive species are typically introduced into new habitats primarily by human actions. Human activities such as international trade (e.g., shipping goods that may carry non - native species), intentional introductions (e.g., for horticulture or aquaculture without proper assessment), and accidental transport (e.g., in ballast water of ships) play a major role. While strong winds and storms can move some species over short distances and fungi/bacteria can be part of invasive species complexes in some cases, human - mediated introductions are the most significant and widespread cause of invasive species establishment in new habitats.

Answer:

primarily by human actions