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  2. Corpus Christi ISD science fair promotes STEM - AOL

    www.aol.com/corpus-christi-isd-science-fair...

    The best part of the science fair, Recio said, is testing out experiments. Third grade student William Kim admires a winning science fair project on ants at Miller High School on Friday, Jan. 19 ...

  3. Bivalvia - Wikipedia

    en.wikipedia.org/wiki/Bivalvia

    Bivalvia (/ b aɪ ˈ v æ l v i ə /) or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-shells known as valves.

  4. Freshwater bivalve - Wikipedia

    en.wikipedia.org/wiki/Freshwater_bivalve

    Freshwater bivalves are molluscs of the order Bivalvia that inhabit freshwater ecosystems. They are one of the two main groups of freshwater molluscs , along with freshwater snails . The majority of bivalve molluscs are saltwater species that live in the marine habitats , but a number of families have evolved to live in fresh water (and in some ...

  5. Human interactions with molluscs - Wikipedia

    en.wikipedia.org/wiki/Human_interactions_with...

    Bivalve molluscs are used as bioindicators to monitor the health of aquatic environments in both fresh water and the marine environments. Their population status and structure, physiology, behaviour and their levels of contamination with chemicals together provide a detailed indication of the status of the ecosystem.

  6. Bioturbation - Wikipedia

    en.wikipedia.org/wiki/Bioturbation

    Bioturbation and bioirrigation in the sediment at the bottom of a coastal ecosystems The marine nitrogen cycle. Coastal ecosystems, such as estuaries, are generally highly productive, which results in the accumulation of large quantities of detritus (organic waste). These large quantities, in addition to typically small sediment grain size and ...

  7. Unionidae - Wikipedia

    en.wikipedia.org/wiki/Unionidae

    Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture, obtaining oxygen and food. They remove phytoplankton and zooplankton, as well as suspended bacteria, fungal spores, and dissolved organic matter.

  8. Evolution of molluscs - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_molluscs

    One bivalve group, the rudists, became major reef-builders in the Cretaceous, but became extinct in the Cretaceous–Paleogene extinction event. [26] Even so, bivalves remain abundant and diverse. The Hyolitha are a class of extinct animals with a shell and operculum that may be molluscs.

  9. Bioindicator - Wikipedia

    en.wikipedia.org/wiki/Bioindicator

    Bioindicators can tell us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical and chemical testing cannot. [ 3 ] A biological monitor or biomonitor is an organism that provides quantitative information on the quality of the environment around it. [ 4 ]