Humans raise large numbers of cattle for food. How will these herds of cows affect Earth’s atmosphere?

The impact the population of cattle has on the Earth's atmosphere is very miniscule albeit present. Cattle release methane gas which is destructive to the atmosphere, but the current impact is hardly recognizable. With the increasing requirement of food to support a gradually rising population, we will see either now or in the near future the impact the need for cattle has on our atmosphere. I believe that this problem can be controlled and contained with the right technology.

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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.