The given statement is False.
For a source of water pollution the pollutant can be any undesirable substance present in water.
These undesirable substances can be biological, physical or chemical.
Biological substances such as harmful microorganisms or physical substances such as plastic, garbage and other substances present in water can also be considered as the water pollution.
The chemicals, and other substances are considered as the source of water pollution.
<span>the answer is :
permanent magnets
</span>A permanent magnet<span> is an object made from a material that is </span>magnetized<span> and creates its own persistent magnetic field. An everyday example is a </span>refrigerator magnet<span> used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called </span>ferromagnetic<span> (or </span>ferrimagnetic<span>). These include </span>iron<span>, </span>nickel<span>, </span>cobalt<span>, some alloys of </span>rare-earth metals<span>, and some naturally occurring minerals such as </span>lodestone<span>. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of </span>magnetism<span>.</span>
The steps of tissue repair in order from start to finish are 1, 3, 2, 4.
The method of tissue repair follows some steps below especially when the damaged tissue are in close apposition.
These steps in order from start to finish include:
- Bleeding into the cut: This is the homeostasis stage. As the wound bleeds, the aim of this stage is to stop the bleeding by activation of emergency repair system, the blood clotting system.
- Scab formation; macrophages become active: This is the inflammatory stage. Phagocytes such as the macrophages begin to remove the dry blood clot called scabs and cell debris.
- Formation of granulation tissue and fibroblastic phase of repair: This stage is called the proliferation stage. Granulation tissue which contains new capillary buds, phagocytes and fibroblasts, develops. Fibroblasts continues to secrete collagen fibres for the tissue restoration.
- Epithelial regeneration; fibrosis; remodeling phase: This is the maturation stage. Here, the granulation tissue is replaced by fibrous scar tissue and rearrangement of the collagen fibres occurs, increasing the strength of the wound.
Therefore, the steps of tissue repair in order from start to finish are 1, 3, 2, 4.
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Answer:
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Explanation:
