What are nonnative species a threat to biodiversity? a) they often use up resources that the organisms need. b) they are not able to successfully breed in the wild. c) they release pollution into many environments. d) they easily contract and spread diseases to other organisms.

 Option A

Explanation:

Non native species can be defined as the the species that are intentionally or non intentionally being brought to a place where it did not belong. These species might come to a new place by certain carriers.

Non native species are threat to biodiversity means native species because the invasive species utilize the resources that is available for the native species.

The resources can be sunlight, food, and other resources which will lead to competition.

it would be c. xylem.