Which Is Not True of the El Niño Southern

question 101

Multiple Choice

Which is not true of The El Niño Southern Oscillation (ENSO) phenomenon?

• A)it creates the smallest variation in climate from year to year on a global scale.
• B)it involves lower than normal pressure in the western Pacific and higher than normal pressure in the eastern Pacific,reversing the trade winds.
• C)it brings rain to some areas and drought to others,predictably and consistently.
• D)it is linked to droughts in India,floods in the southwestern United States,and droughts in South Africa and Australia.
• E)it is completely understood now,and can be predicted decades in advance.

---

Definitions:

Purines

Nitrogenous bases found in DNA and RNA that include adenine (A) and guanine (G), playing a crucial role in encoding genetic information.

Pyrimidines

One of the two types of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).

Chargaff

Refers to Chargaff's rules, which are empirical rules regarding the ratios of nucleotide bases within DNA molecules: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Guanine

One of the four main nucleobases found in the nucleic acids DNA and RNA; it pairs with cytosine.