AYUDRME A ESCOGER LA RESPUESTA ACERTADAInsects and Agriculture Same species, most of them insects, benefit increasingly from man 's activities. Modern, largescale agriculture offers them a paradise. Crops are grown year after year in the same or nearby fields, helping insects populations to build up. Many of the worst pests are insect invaders from foreign countries that have left their natural enemies behind and so are as free as man himself from the check of nature's balance. Agricultural scientists try hard to find ways to check insect pests by tricks of cultivation. They import the ancient enemies of invading foreign insects and foster the resident enemies of invading foreign insects. 4. Some species that benefit from man's activities ----. A) have large populations because of modern agriculture B) are killed by modern techniques C) are generally killing all the living organisms D) have been used as a check of nature E) cause a lot of damage in the harvest of in summer
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Respuesta:
La respuesta correcta es la A
Explicación: El texto menciona claramente que algunas especies de insectos se han beneficiado de las actividases agrícolas modernas que usan las personas, por el lugar en el que cultivan sus productos.
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