Historically, the earth’s ocean had a pH of 8.2. In recent years, it has dropped to 8.1. How might this change affect the ocean environment?

The largest city in brazil, sao paulo, has a population of about 11 million. based on the rank-size rule, what is the population of the second-largest city, rio de janeiro, most likely to be? a. 8 – 10 million b. 5 – 6 million c. about 3 million d. about 1 million

According to the article, what did plato and aristotle have in common?

In 1990s the us closed clark air force and subic bay naval station in