Everyone of us have a blind spot which is a small portion within the visual field of every eye where the optic nerve and blood vessels leave the eyeball. Optic nerve is connected to brain ehich carries images of what we see.
Which elements are most abundant in living organisms?
A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
B) carbon, potassium, iron, magnesium, hydrogen, and nitrogen
C) hydrogen, carbon, calcium, potassium, oxygen, and phosphorus
D) oxygen, calcium, phosphorus, sodium, hydrogen, and carbon
A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
B) carbon, potassium, iron, magnesium, hydrogen, and nitrogen
C) hydrogen, carbon, calcium, potassium, oxygen, and phosphorus
D) oxygen, calcium, phosphorus, sodium, hydrogen, and carbon
Answer & ExplanationAnswer: A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
Explanation:
Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium, sulphur and phosphorus.
Light travels fastest in Vacuum. The fastest thing in the whole universe is the speed of light in a vacuum like outer space. It is about 2.99 x 108 m/s.
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