El Niño is a phenomenon that impedes the occurrence of upwellings in South America's coasts.<em> 1) Nutrients. 2) Favors local fisheries. 3) Upwellings do not occur during El Niño events. </em>
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The El Nino Southern Oscillation -ENSO- phenomenon occurs due to a complex system of climatic oscillations between the ocean and the atmosphere.
This phenomenon causes significant perturbations in the usual pluvial regimens in the tropics. It provokes
• dry seasons in areas where it usually rains
• rainy seasons in desertic regions.
ENSO phenomenon is dominant in the global climate system.
<u>SOUTHERN HEMISPHERE
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⇒ Under normal conditions
- Pacific warm water and air masses move westward, making it possible for cold water to ascend in South America's coasts, in a process known as <em>upwelling</em>.
- Upwelling occurs in South America, providing nutrients from the bottom to the animals, especially fishes -which<em> favors </em><em>fisheries activities</em>-.
- Humidity goes straight to the west precipitating in Eastsouth Asia, Australia, and New Zealand, among other places.
⇒ Under El Niño conditions
- A tropical and weak stream in the Pacific acquires strength while the opposite streams debilitate.
- This change impedes warm water go westward, remaining on South America's coasts.
- Upwelling does not occur on the South America coasts. In some regions, temperatures rise, and unusual precipitations occur in desertic or dry areas -Atacama desert-.
- Other affected areas are<em> Eastsouth Asia, Australia, and New Zealand, </em>where there are fewer precipitations and cooler temperatures. Rainfall drops below the average, affecting crops and livestock.
<em>1) What comes up to the surface with cold upwelled water? </em>
- Upwelling is vertical water currents, which transport cold water with nutrients from the bottom to the surface.
<em>2) What effect does this have on the local fishery?</em>
- Nutrients coming from the bottom benefit fishes and increase their population growth rates.
- The increase in the number of fish means a direct increase in fisheries activities.
- Local fisheries can catch more animals because the population sizes are big enough.
<em>3) What happens to this cold upwelled water during an El Nino event?</em>
- Upwelling does not occur during El Niño events.
- Warm water remains on south America's coasts. Hence, cold water from the bottom carrying nutrients does not get to ascend.
- These are unfavorable seasons from local fisheries.
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You can learn more about El Niño events at
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The answer to this is B. Methane
Answer:
Starting molecules not completely and quickly convert to its possible product because an activation energy barrier exist that must be overcome for conversion to product.
Explanation:
The activation energy of a chemical reaction is closely related to its rate. This is because molecules can only complete the reaction once they have reached the top of the activation energy barrier. The higher the barrier is, the fewer molecules that will have enough energy to make it over at any given moment.
Many reactions have such high activation energies that they basically don't proceed at all without an input of energy. For instance, the combustion of a fuel like propane releases energy, but the rate of reaction is effectively zero at room temperature. Once a spark has provided enough energy to get some molecules over the activation energy barrier, those molecules complete the reaction, releasing energy. The released energy helps other fuel molecules get over the energy barrier as well, leading to a chain reaction.
DNA is, DNA is in prokaryotic cells, which is present in a single circular chromosome, that is located in the cytoplasm. Its in chromosomes, which is in cytoplasm, so technically, DNA is in cytoplasm.
