Ans.
Water cycle describes a cyclic process that involves circulation of water between the earth's atmosphere, oceans, and land through precipitation, drainage in rivers and streams, and return to the earth's atmosphere by transpiration and evaporation.
During respiration, organisms exhale carbon dioxide and water in the form of vapor that goes back to the atmosphere by evaporation.
Thus, the correct answer is option A).
D. because the density of ice is less than water
The Gulf Stream<span>, together with its northern extension towards Europe, the </span>North Atlantic<span> Drift, ... Click here for more information. ... By carrying warm </span>water<span> northeast across the Atlantic, it </span>makes<span> Western and especially Northern ... The </span>North Atlantic Current<span> of </span>the Gulf Stream<span>, along with similar warm air currents, helps keep ...</span>
Answer:
Explanation:
The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space) which protects the cell from its environment.[1][2] The cell membrane consists of a lipid bilayer, including cholesterols (a lipid component) that sit between phospholipids to maintain their fluidity at various temperatures. The membrane also contains membrane proteins, including integral proteins that go across the membrane serving as membrane transporters, and peripheral proteins that loosely attach to the outer (peripheral) side of the cell membrane, acting as enzymes shaping the cell.[3] The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.[4] In addition, cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, the carbohydrate layer called the glycocalyx, and the intracellular network of protein fibers called the cytoskeleton. In the field of synthetic biology, cell membranes can be artificially reassembled