Answer:
i have trusted my best to answer
Explanation:
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The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (at about 10 km (6.2 mi) under the oceans and about 35 km (22 mi) under the continents) and ends at the top of the lower mantle at 670 km (420 mi). Temperatures range from approximately 200 °C (392 °F) at the upper boundary with the crust to approximately 900 °C (1,650 °F) at the boundary with the lower mantle. Upper mantle material which has come up onto the surface is made up of about 55% olivine, 35% pyroxene and 5 to 10% of calcium oxide and aluminum oxide minerals such as plagioclase, spinel, or garnet, depending upon depth.
Answer:
D I guess because grinding optical glass and for polishing metals and has also been made into sandpapers and grinding wheels.
Answer:
Rays having same endpoint E but not in the opposite directions are ED and EC. This pair of rays meet at point E having different directions.
Well, the high energy and heat found in the photons of sunlight allow plants to make their own food, sustaining them long enough to be eaten by us, or to be eaten by animals about to be eaten by us. Plus we get direct warmth from the sun. These things mean that the sun is what keeps all organisms alive in the first place.
Answer:
Biochemistry is integrated into the Health science field.
Explanation:
For Health Science, you are dealing with the human body. To solve issues in the human body, you need to understand how it works. This would include both biology and chemistry. Biochemistry just so happens to be a combination of both,and is sometimes called biological chemistry. It is the study of chemical processes within and relating to living organisms, and is usually taken by students who aren't taking Organic Chemistry. Health science has a lot of work in helping athletes train and get back into the game after injuries. If you go along with this example, then you'll understand where biochemistry comes into play. In order to help the athlete heal, you have to be able to understand how your muscles, bones, or even immune system work on a microscopic level. Chemistry comes into play if you have to consider how medications they might be taking may be affecting them, or how their hormones are coming into play.
