Aquaticecosystems are land-based.

Coralreefs also face threats from pollution, unsustainable fishing practices, and oil spills.

Coral reefs are found in shallow ocean areas that are formed mainly by stone like coral skeletons.

Diseases, predators, and storms are threats posed by humans to coral reefs.

Mangal is another name for the mangrove biomes.

Mangroves act as the ocean's nursery and serve as barriers that protect coasts from erosion.

Mangroves sustain billions of worms, protozoa, barnacles, oysters, and other invertebrates, which in turn feed fish and shrimp that hundreds of birds species eat.

Pollution could threaten all types of ecosystems.

Rainforests are water-based ecosystems.

Terrestrial ecosystems are land-based.

The forest floor is the bottom layer of the rainforest.

The growing reef will only last for a thousand years.

The layer below the canopy is the emergent.

The plants of the emergent help sunlight reach the ground.

The top most layer of a tropical rainforest is the emergent.

The under story is the layer below the canopy of a tropical rainforest.

Threats to mangrove forests include inadequate development of Infrastructure near coasts, oil spills, pollution, logging for timber and charcoal production, and extension of usable areas for settlements of humans.

Tropical rainforests are found far away from the equator.

Tropical rainforests are terrestrial ecosystems where it never rains.

Tropical rainforests face threats from logging, mining, clearing to accommodate growth of human population, and construction of roads.