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Pythagoras, the Greek philosopher and mathematician, lived between 528 BC and 496 AD.
At what age did Pythagoras die?
How many years ago did he die?

One person lived 52 years. If he was born in 1422 AD, what year did he die?

A war started in 127 BC. If the war lasted 200 years, in what year did it end?

It takes 5,000 years for a comet to pass close to our planet's orbit again. It visited our planet for the last time in the year 2,850 BC.

In what year will said comet be close to us again?
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Español

Pitagoras, el filosofo y matematico griego, vivio entre los años 528 a. c y el 496 d. c.
A que edad murio Pitagoras?
Cuantos años hace que murio?

Una persona vivio 52 años. Si nacio en el 1422 d. c en que año murio?

Una guerra comenzo en el año 127 a. c. Si la guerra duro 200 años, en que año termino?

Una cometa tarda 5,000 años en volver a pasar cerca de la orbita de nuestro planeta. Este visito nuestro planeta por ultima vez en el año 2,850 a. c.

En que año dicho cometa estara cercana a nosotros?

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.

answer///africa and asia;