Which correctly describes the cause and resulting weather conditions in North America from an El Niño year? a)Cold waters in the Pacific Ocean lead to warmer-than-usual temperatures in the northern US and Canada and cooler, wet conditions in the southern US.

b)Warm waters in the eastern Pacific lead to warmer-than-usual temperatures in the northern US and Canada and cooler, wet conditions in the southern US.

c)Warm waters in the eastern Pacific lead to extreme cold temperatures in the northern US and Canada and warm, dry conditions in the southern US.

d)Cold waters in the Pacific Ocean lead to colder-than-usual temperatures in the northern US and Canada and warm, dry conditions in the southern US.

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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.