How are species introduced to new ecosystems? Check all that apply.

Species can reach new ecosystems by hitchhiking with human travel and trade: they may be carried in cargo crates, transported in or on ships, hidden in produce or meat, or carried on clothing and in luggage. Humans also intentionally introduce some species. Mutations and coevolution can change or shape species over time, but they do not transport a species into a new ecosystem.

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