Question

2 Points

How does climate change cause the ocean's thermohaline current to slow

down?

A. Decrease in temperature - Ice melts and cools water - Cool.

dense water floats

O

B. Increase in temperature - Ice melts and cools water - Cool,

dense water sinks

O

C. Increase in temperature - Ice melts and freshens water -

Freshwater floats over denser salty water

O

D. Decrease in temperature - Ice melts and freshens water -

Freshwater floats over denser salty water

Answer 1

C. Increase in temperature - Ice melts and freshens water - Freshwater floats over denser salty water

Answer 2

Option A. Dense water floats.

Step-by-step explanation:

Ocean circulation act as conveyor belt which transport warm water from the tropics towards poles from where cold water sinks to the deep ocean. It is also known as the thermohaline circulation because it is driven by salinity and temperature.

However, change in climate causing these ocean's thermohaline current to slow down because influx of cold and melting fresh water from the polar region is disrupting these circulation as influx of fresh water making the water less saline and less dense and hence it become harder to sink to deep ocean.