Rico is a border collie that has a(n) (human) word vocabulary for objects. researchers assume that he can infer that an unfamiliar sound refers to an object he's never seen before.

The answer is "200 words".

Having a strong regular vocabulary will help you while composing, yet adapting new words and keeping away from basic word mistakes will establish a genuine connection on your readers. Experienced writers realize that consider, watchful word determination and use can prompt more cleaned, more important work.

Social and economicthe concept of international social responsibility is the expectation that mncs concern themselves about social and economic effects of their decisions regarding activities in other countries.