Causas de contaminación ambiental​

Tala indiscriminada de árboles.

Emisiones y liberación de residuos industriales a la atmósfera y a la hidrosfera.

La extracción, el procesamiento y el refinamiento de combustibles fósiles.

Producción de energía a base de los combustibles fósiles y otras fuentes no renovables.

Uso de medios de transporte propulsados por gasolina o diésel.

Uso de materiales derivados del petróleo.

Liberación de plásticos y objetos no biodegradables en espacios naturales.

Explanation:

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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the answer is c.) there is a warm front in region a and a stationary front in region b.