Answer:
Longitudinal
Explanation:
Longitudinal waves have the same direction of vibration as their direction of travel. This means that the movement of the medium is in the same direction as the motion of the wave. Some longitudinal waves are also called compressional waves or compression waves.
The cells which are involved in dissolving bone tissues are osteoclasts. Osteoclasts are bone dissolving cells found on bone surfaces. They are formed from the fussion of hemocytoblasts; they are multi nucleated and large. Osteoclasts typically move over the surface of the bone matrix and secrete acids and enzymes that disintegrate it, forming little pits on the surface of the bones.
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Answer:
The correct answer is option - B. carbon dioxide.
Explanation:
Global warming is the rise in the overall temperature of the earth and its climate in the long term. It takes place due to the greenhouse gases emission that absorbs the heat and heat trapped in the atmosphere and increases the temperature of the climate system of the earth.
Greenhouse gases are the different gases that increase the temperature due to their ability to absorb and trap the heat that comes from solar light. The major source of the greenhouse gases is Carbon dioxide gas as its very small increase can affect and increase global warming to a different extent. Global warming has huge impact on earth and ecosystem as it increasing sea level by melting a glacier and other ways.
Thus, the correct answer is option - B. carbon dioxide