Protozoans form sediment and are considered an indicator species.
Indicator species can be used in one of two ways: * the indicator species is one which easily affected by the pollutant. Specimens are kept in an area and observed. When they show distress the pollution rate is climbing, and this happens before the hardier species are impacted. Think of canaries in coal mines. * When a biologist inspects an ecosystem he keeps track of the population and the species present. If only hardy (pollution resistant) species are present the ecology has become degraded. If sensitive species are present the environemt is still good.
They are considered to be in the same species.
The climate of a certain area defines what types of life can survive there. Certain species are well-equipped to live in the forest, whereas other species are well-equipped to live in the desert.
The combined, or aggregate, impacts of climate change have caused a decrease in the welfare of certain species across the globe. Certain of species of fish, for example, have been massively affected.
there are more types of species in a mature Forest because although certain species of plants and animals are present in a mature forest community, the forest itself in constantly changing.
Protists
Certain microorganisms, such as diatoms and foraminifera, that form sediment are considered indicator species. These organisms have specific habitat requirements and environmental tolerances, so their presence or absence in sediment can provide valuable information about the conditions of their habitat, including water quality, temperature, salinity, and nutrient availability. Their abundant fossil record in sediment also aids in paleoenvironmental reconstructions.
Protists
An analogous organ is a trait that appears similar in unrelated organisms. It indicates that the unrelated organisms are living in similar environments and have evolved similar characteristics to deal with similar problems.
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
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Indicator Species
some are bugs
a specialized species
It depends what animal exactly we are talking about. Generally, animals are harmed by air pollution, however, certain species, indicator species that indicate high levels of pollution, can only survive in highly polluted areas.