Which of the following is true about El Niño weather events? A There have always been El Niño events, but scientists still do
not know what causes them.
B The hottest ocean surface temperatures are in the western
Pacific, and El Niño has greater impact there than anywhere else.
C El Niño causes different storm patterns across the world, and
it can result in famine, disease, and harmful changes in the
ocean.
D The large storms associated with El Niño occur every year in
the same months

El Nino is a weather pattern which usually peaks during the winter months of the northern hemisphere. This weather pattern involves interaction between the ocean and the atmosphere, resulting in warmer waters in major areas of the Pacific Ocean. When that happens, global weather patterns will be affected so C.

Explanation:

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.