Question

Use las siguientes palabras para completer el texto. (aerobic - runs out of X2 – needs – becomes – brings – begin - have and collapse - will stop-will be less good - don’t like - woody waste problem - has - break down –isX5 – are) NOTA* (X) significa que la palabra se repite POR EL NUMERO DE VECES QUE ESTE AL LADO DE LA (X). Composting is an_______________ process, which_______ a fancy way of saying it____________ air. What’s more, air__________ probably even more important than food—the average compost pile______________ air long before it_______________ food. If there isn’t enough air, decomposition________________ anaerobic, which_________ bad news for two reasons. First, it’s much slower than aerobic composting, and second, some of the products, such as ammonia and hydrogen sulfide, don’t smell very nice. Traditional advice ___________ to turn compost piles, specifically to introduce more air, but the perceived need to turn piles regularly __________enough to put many gardeners off the whole idea of composting. Which___________ us to a central dilemma: nitrogen-rich materials such as annual weeds and kitchen waste decompose quickly, but lack structural strength. As soon as they_________ decomposing, they lose what little structure they_______________ into an airless, smelly mess. It’s easy to add materials with more fiber, such as tree and hedge prunings, and these______________ the pile from collapsing. But they decompose much more slowly than soft material, so you end up with coarse, twiggy compost. Shredding woody waste first helps it to________________ more quickly, but reduces its usefulness in imparting structure to the pile. Why does woody waste decompose so slowly? Because it a high C: N ratio and the composting bacteria are not very good at breaking it down. Fungi__________ much better, but work only slowly and usually_______________ quite the same conditions as bacteria, so a pile that’s just right for bacteria________________ for fungi. Nevertheless, fungi can play an important role in making leafmold. So the would-be composter is faced with a dilemma—in fact, two dilemmas for the price of one: how to give the pile structure and what to do with large quantities of woody waste. We’ll deal with the_________________ later, but to add structure, we need a material that has some structure but breaks down relatively quickly. One excellent solution is a waste material that every household produces in abundance and__________ recycled far less often than it should be: paper and cardboard.

Answer 1

Respuesta:

no se lo siento

Explicación: