A mixture of clay and/or silt with water to form a plastic mass with a particle size preponderantly below 0.06 mm diameter. It is deposited in low-energy environments in lakes, estuaries and lagoons. It may also be deposited in deep-sea environments. (GEMET. 2025. Mud (sediment) http://www.eionet.europa.eu/gemet/concept/5417)
Two individuals derived from two fetuses that were fertilized at or about the same time, developed in the uterus simultaneously, and born to the same mother. (DeCS/MeSH. 2025. Twins https://decs.bvsalud.org/fr/ths/resource/?id=14826)
