This question is rather vague, but there are many different things you can learn about Earth's history though the study of animals. For example: you can look at the fossils of dinosaurs and learn how they lived, their size, what era they were from, etc. If you are looking at live animals, you can determine how they live with the environment around them.
Talk is used to know what are happening,communicate and meet friends
Answer: Their for the first one and They're for the second one.
<span>The word which is an example of an adverb is B. actually. Oily, lively, and silly are all adjectives, meaning that they modify nouns, and the word actually is an adverb which means that it modifies a verb. Although all of these words end in -ly, which is a characteristic of adverbs, not all of them are adverbs regardless. </span>
