Cows are walking machines. They transform materials ( grass, hay, and feed) into finished products ( milk, beef, leather and so on).
As any factory, cows produce wast. Solid wast is eliminated through the rear end of these "Complexe machines" and is used as fertilizer.
The fermentation process in their four stomachs producers gas. These walking machines have two chimneys one in the front of the and, the other in the rear end. Gaseous emissious through the front and chimney are called burps. Cows burp a lot. Every minute and a half. These burps release methane gas. Methane is dangerous to the planet because it contributes to the greinhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more catle ( ai eu naum sei se e so catle ou cattle) more walking machines producing more methane gas.
This is problem, but very few people want to change their eating habit.What about you?

1) Responda as questões em Português. Encontre as respostas no texto.

a) Por que o autor diz que as vacas são máquinas que andam?

b) Qual é o problema de crescimento dos rabanhos de gado?

c) O que acontece quando uma vaca arrota?

2) Escreva Verdadeiro ou Falso/ ( V ) ou ( F ):

( ) Cow have more than one stomach.
( ) The production of methane is a serious problem.
( ) Cows eliminate gases through their front and rear ends.
( ) Burps are eliminations of gas through the rear end.
( ) Cows burp approximately 10 times in one hour.

3) Escolha a alterniantiva correta:

1. According to the text:

a) Methane gas contributes to the greenhouse effect.
b) Cows transform methane into finished products.
c) Methane is the only cause of the greenhouse effect.
d) Milk is eliminated through the fron end.

2. Cows and factories:

a) have four stomachs.
b) are walking machines.
c) have only one chimney.
d) produce waste.

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  1. pqp

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