Se denomina planeta extrasolar<span> o </span>exoplaneta<span> a un </span>planeta<span> que orbita una estrella diferente al </span>Sol<span> y que, por tanto, no pertenece al </span>sistema solar<span>. Los planetas extrasolares se convirtieron en objeto de investigación científica en el siglo XX. Muchos </span>astrónomos<span> suponían su existencia, pero carecían de medios para identificarlos. La primera detección confirmada se hizo en 1992, con el descubrimiento de varios planetas de masa terrestre orbitando el </span>púlsar Lich.1<span> La primera detección confirmada de un planeta extrasolar orbitando alrededor de una estrella de la </span>secuencia principal<span> (</span>Dimidio<span>), se hizo en </span>1995<span> por los astrónomos </span>Michel Mayor<span> y </span>Didier Queloz.2<span> Desde entonces el número de hallazgos ha crecido año tras año.</span>
The temperature at tropic region is warmer than the polar temperatures due to angle of the sun.
The tropics which is located near the equator are hotter than the arctic region i.e. north and south poles because the sunlight falls directly on the tropic regions at 90 degrees while on the other hand, the sunlight falls on the poles not directly and form angle lower than 90 degrees.
The amount of solar energy in a given area is greater at the equator and tropic regions than in an equal area at the poles so that's why the temperature at tropic region is warmer than the polar temperatures.
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Homo sapiens
Dogs
Cats
Flies
Bees
Ants
Mouse
Chickens
Ducks
Turtles .....etc...etc <span />
Answer:
The correct answer is "Darwin's theory of evolution is based on the premise of survival of the fittest; antibiotic-resistant microorganisms are selected by overuse of antibiotics".
Explanation:
Darwin's theory of evolution states that advantageous traits in living beings are selected under the premise of survival of the fittest, where the living beings with the advantageous traits are more likely to survive and reproduce. Darwin's theory of evolution explains the spread of antibiotic-resistant microorganisms, because resistance to antibiotics is an advantageous trait for microorganisms that are constantly in contact with antibiotics. The irresponsibly use of antibiotics leads to the spread of antibiotic-resistant microorganisms, because microorganisms that are naturally resistant to antibiotics are constantly selected and can reproduce and prosper.
