AP BIOLOGY

Detailed explanation-1: -This statement is False because salt is found in seas and oceans not in rivers. River water is sweet and sea’s and oceans water is salty.

Detailed explanation-2: -Rain replenishes freshwater in rivers and streams, so they don’t taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it.

Detailed explanation-3: -Rivers are constantly running. They pick up minerals and salt from the rocks they pass by. Rivers run towards the ocean and when river water mixes with the ocean water, the salt mixes along with it. River waters are constantly being restocked by fresh water from rain and springs, thus they do not taste salty.

Detailed explanation-4: -The salt, however, will not evaporate with the water and so, the water in the glass should taste clean. This is why rain is fresh and not salty, even if it comes from seawater.

Detailed explanation-5: -The Baltic Sea, almost enclosed by northern Europe and Scandinavia, has a very low salinity of about 10 ppt. This is mainly due to the huge amount of freshwater added from hundreds of rivers.