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Some types of streams: bradied channel stream, creek, River, Straight Channel Stream, and Meandering Channel Stream.
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Bot perform Photosynthesis.
Metastasis will happen and cancer cells invade nearby healthy cells, tissues, lymph nodes, organs or will migrate to distant organs.
The two different types of stem cells broadly classified as are Embryonic stem cells and adult stem cells. Embryonic stem cells are obtained from the blastocyst layer of the embryo and are pleuripotent. Whereas adult stem cells are the undifferentiated cells from tissues of an adult or a child. They can be unipotent or multipotent.
Explanation:
Cancer cells migrate to other parts of the body via blood and lymphatic system. This is called as metastasis. Cancer cells when becomes tumour they develop their own blood vessels and obtain nutrients from them. Once the tumour gets big it pushes the normal healthy cells of the neighbouring tissues and keeps on spreading.
Stem cells obtained from the embryo can differentiate into any types of cell and when grown in-vitro can dramatically form the three germ layers.
The adult embryo cells are found in less quantity, their role is to repair the tissue they reside in.
Answer:
b. to alert communities to potential health risks
Explanation:
Vog is defined as the form of air pollution which is caused by the emission of sulfur dioxide and other particles formed due to reaction of oxygen and moisture with volcanic gases in the presence of sunlight.
Scientists or volcanologist study vog to save life of people around the volcanic sites. As volcanic eruption can cause several helath risks<em> such as suffocation, respiratory problems, skin diseases, eye injuries and conjunctivitis.</em>
So, They predict the health risk by evaluating different gases in the vog and alert people to take precautions to be safe.
Hence, the correct option is b.
