1. what are some of the natural disasters that mexico experiences?
a. tsunamis
b. earthquakes
c. blizzards
d. a and b only
2. which of the following are effects of "el nino"?
a. hurricanes
b. floods
c. droughts
d. a and b only
e. a, b, and c

1. The right answer is d. A and B only.

On September 8, 2017, the earth shook in Mexico on the night of Thursday to Friday. An earthquake measuring 8.2 on the Richter scale hit the south of the country off the coast of Chiapas state, according to the US Geospatial Monitoring Center (USGS). The shock was felt as far as the capital, Mexico City.

2. The right answer is e. A, B, and C.

El Niño, and its La Niña counterpart, are large-scale oceanic phenomena of the equatorial Pacific Ocean, affecting the wind regime, sea temperature, and precipitation. El Niño and La Niña correspond to the two opposite phases of the coupled ocean / atmosphere phenomenon called ENSO (El Niño / Southern Oscillation).

Originally, the name El Niño was attributed by Peruvian fishermen to the small invasion of hot water that occurs every year along the coasts of Peru and Ecuador around Christmas - hence its name: in Spanish, El Niño means the child Jesus. By extension, the climatic phenomenon corresponding to the increased warming of surface waters near the coast of South America is now called El Niño. We know that it is linked to a cycle of changes in atmospheric pressure between the east and west Pacific, coupled with a cycle of ocean current along the equator.

Only ENSO has such a marked global impact. The other two ocean basins, Indian and Atlantic, are too small to allow such an important coupling between atmospheric and oceanic circulation, even if they also undergo deep water upwelling and trade winds.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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