The earth is often referred as a blue planet because the hydrosphere looks blue and it covers 3/4 of the earths surface. So the answer is D
<span>Anthropology is a science which studies human study of both in terms of culture, behavior, diversity, and so forth. Anthropology is a term word comes from the Greek word anthropos and logos. Anthropos meaning human and logos means story or word.
The object of anthropology is human in society ethnicity, culture and temperament. The science of anthropology has the purpose to study the human being in society tribes, behaved and cultured to build community itself<span>.</span></span>
Answer:
We do not have 
- the amount of substance.
The molecular weight (
) of Bromine is 80.
