Mohammed wishes to travel to South America is the witch knowledge of the oceans will help Mohammed navigate?

A. Ocean currents

B. High tides

C. Alkalinity of seawater

D. Plate tectonics

Option (B)

Explanation:

Tides refer to the subsequent rise and fall of the sea level which is caused due to the gravitational force of attraction between the earth and the moon.

The high tide refers to the rising up of sea level, and it very much helpful for navigation purposes. A ship can easily sail into the nearest harbor when there occurs a high tide, thereby helping the sailor to reach the nearest land touching place. This is commonly used by the ship sailors.

Thus, Mohammed should have the knowledge of tides, and how both high and low tides are useful for navigation.

Hence, the correct answer is option (B).

when the chinese communist party took power in 1949, it began to build new di and levees to hold the yellow and yangtze rivers back.

places of higher salinity. there are parts of the ocean where hardly any rain falls but warm dry winds cause lots of evaporation. this evaporation removes water – when water vapour rises into the atmosphere, it leaves the salt behind, so the salinity of the seawater increases. this causes the seawater to become denser.