What is homeostasis and how does the cell membrane maintain homeostasis

How does a cell maintain homeostasis? Homeostasis, as we've just stated, is the state of maintaining a stable internal environment despite the changing external conditions. With cells, the cell membrane is the key here. It helps maintain cell homeostasis by controlling both what enters and what leaves the cell. This happens through a variety of different processes, which we will discuss in the next segment.

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donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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i googled "who was kolson johanson" and this is the answer i found.

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the answer is a. the harappan civilisation is also called the indus valley civilisation, this is because they built their cities along the indus river. the reason behind this location can be found in the rest of the "old world" civilisations like mesopotamia or egypt, the first built their cities along the rivers tigris and euphrates, the second along the nil; : their respective civilisations thrived because the overflowing of their respective rivers produced favorable conditions for agriculture, their main support.