✅ The correct answer is option D.
Salt in the ocean comes from rocks on land. The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. This causes the rainwater to be slightly acidic due to carbonic acid (which forms from carbon dioxide and water).
✅ The correct answer is option C.
The sulphites are a mineral group that contain one or more metallic elements in combination with the sulphate compound SO4.
✅ The correct answer is option B.
The middle latitudes are found between 30 degrees N/S and 60 degrees N/S. And the high latitudes are found between 60 degrees N/S and the poles (90 degrees N/S).
✅ The correct answer is option C.
Dozens of land areas of the Earth sit below current sea level. The lowest land area is the shoreline of the Dead Sea Depression in Israel, Jordan and Syria. It is approximately 413 meters or 1355 feet below sea level.