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Mice and rats  — Research Starter

Mice and rats, particularly the house mouse (Mus musculus) and the Norway rat (Rattus norvegicus), belong to the large rodent family Muridae, which encompasses over 1,380 species. Originating in Asia,…

Metamorphosis  — Research Starter

Metamorphosis is a biological process characterized by a significant transformation in body form that occurs after the embryonic development stage. This phenomenon is particularly notable in various…

Metabolic rates in animals  — Research Starter

Metabolic rates in animals refer to the rate at which organisms convert food into energy, a vital process for sustaining life and facilitating growth, movement, and other activities. This metabolic…

Mark, release, and recapture methods  — Research Starter

Mark, release, and recapture methods are essential techniques used in wildlife biology to estimate animal populations within a specific habitat. This approach is particularly valuable for studying…

Marine biology  — Research Starter

Marine biology is the scientific study of the diverse organisms that inhabit the world's oceans, which cover 71 percent of Earth's surface and represent 99 percent of the planet's living space.…

Marine animals  — Research Starter

Marine animals encompass a vast and diverse range of life forms that inhabit the world's oceans, which cover approximately 71 percent of Earth's surface. These organisms are categorized into three…

Mammoths  — Research Starter

Mammoths were large, elephant-like mammals that roamed the Earth during the Pleistocene epoch, particularly favored in cold tundra and grassland habitats. They are classified within the order…

Mammalian social systems  — Research Starter

Mammalian social systems exhibit a wide range of structures and behaviors, from solitary species like the mountain lion to highly social groups such as the naked mole-rat, which displays eusocial…

Lungs, gills, and tracheas  — Research Starter

Lungs, gills, and tracheas are specialized respiratory organs that enable gas exchange in various animal groups. Their structure is intricately linked to their function, which involves the diffusion…