Carbon is so abundant in living things even though oxygen is the most abundant element on Earth because carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures.
The correct answer is the first option.
Hi the answer is they were from all parts of the world.
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Convection cell
Air Pressure and Winds
Warm air rises, creating an upward-flowing limb of a convection cell (Figure 15.19). Upward flowing air lowers the air pressure of the area, forming a low pressure zone. The rising air sucks in air from the surrounding area, creating wind.
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Redi’s expoerment disaproved the spontaneous generation theory
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Shortsightedness refers to the situation where the eyeball becomes to long so therefore light extends the retina and the persons finds it difficult to view things near him.It can be cured by using concave lens
