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iceplant: Also known as Pigface or Hottentot fig, this fleshy South African native, Carpobrotus edulis, is a member of the Stone Plant family Aizoaceae. It has become an invasive species in the US especially along the California coastline.

immune cells: components of blood e.g., white blood cells that help the body's defense systems.

indicator species: those species that can offer early warning signs of ecological stresses.

infectious: capable of spreading; communicable.

infertility: diminished or absent ability to conceive.

infrared energy: electromagnetic radiation relating to the range of invisible wavelengths from about 750 nanometers (.00002 inches), just longer than red in the visible spectrum, to 1 millimeter (.04 inches), on the border of the microwave region.

inhalers: small plastic devices used to get medicine to the airways (e.g., lungs).

insecticides: any chemical pesticide used to kill insects.

Integrated multi-trophic aquaculture (IMTA): the practice of farming marine organisms, where several species are raised together. In well-designed systems, the waste product of one species is food for the others being raised, thereby reducing impacts on the environment.

introduced species: organisms that have been brought into an area in which they do not naturally occur. Introduced species can compete with and cause problems for native species. Introduced species are also called exotic, non-native and alien species.

invasive species: species not native to a habitat, that compete with native species for food and space and typically cause economic and/or environmental harm.

invertebrate: an animal belonging to the Invertebrata i.e., without a backbone, such as the mollusks, arthropods and coelenterates.

IPCC: The “Intergovernmental Panel on Climate Change” is group of scientists created by the United Nations to evaluate the risk of climate change caused by human activities

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