if our air becomes mucky/dirty, then we will get sick from it. if there is manure all over the place, you'd become sick from smelling it for too long. simple. ^^
so, the answer is d. :D
Mansa Musa. the pilgrimage journey exposed Mali to Europe and the Middle East. The king had carried 30,000 pounds of gold, which signified the immense wealth in his empire. This created an impression on his acquaintances.
Answer:
B. The presence of an earthquake belt.
Explanation:
A rift valley only happens when the plates are diverging. A trench represents plates converging. And the presence of active volcanoes is only on converging and some diverging boundaries (hence there is no volcanoes in California). An earthquake is present in all plate boundaries.
21% of ears fresh water is there
