The answer to the given question is 90%.
Wheat straw has the lowest nutritional value among all the other straw feed present for cattle. There is almost 90% of dry matter present in the wheat straw.
Straw can prove to be a better feed option for cattle and other animals but only when mixed with other nutritionally enriched feeds. One year old straw is more digestive as compared to fresh straw.
answer: air pollution
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