What are some of the negative environmental effects of agriculture, and why do they occur?

La producción agropecuaria tiene unos profundos efectos en el medio ambiente en conjunto. Son la principal fuente de contaminación del agua por nitratos, fosfatos y plaguicidas. ... Si se utilizan más métodos de producción sostenible, se podrán atenuar los efectos de la agricultura sobre el medio ambiente.  I hope it helps you

Explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]