Because basically what they eat is what they're filtering from the sea. Pollutants and such will be included. If there is an over-abundance or organic matter due to pollution, it might show in causing larger population numbers of bivalves as well...
Bivalves commonly found grouped in beds include mussels, clams, oysters, and scallops. These bivalves often aggregate together for protection, reproduction, and access to food sources, creating dense beds or reefs that provide important habitat for other marine organisms.
It pollutes groundwater and destroys habitat.
limiting factors.
Different Habitats have different environmental conditions
The scientific term for habitat is "environmental niche" or "ecological niche." This refers to the specific role and position of a species within an ecosystem, including its habitat requirements and interactions with other species.
They didn't have a habitat because they did not exist.
because the habitat is destroyed
Through evolution, loss of natural habitat and environmental changes.
they don't adapt to well to environmental change especially changes such as deforestation.
environmental pollution, hunting, loss of habitat, global warming.
Because
they like their habitat because i should be close to their natural habitat