Hi the answer to your question would be, Theremohaline circulation is mostly driven by global density gradients created by surface heat. So, deep ocean currents are caused by the water's density, which is controlled by the temperature (greek word thermo) and salinity (haline). This is thermohaline circulation described. Now once the sea water gets more saltier and then ice forms some salt is left behind and then density increases & starts to sink. Now surface water comes in to replace the sinking water & the temperature drops and then it becomes cold & salty enough to sink. This initiates the deep ocean currents which drives the global conveyor belt. Let me know if you need me to explain more. Hope this helped :)
Answer:
Maybe it is 5.50 because not much information is given to calculate it or to find it.
Where are the choices? What following answers?
Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.
Explanation:
New ocean crust is formed at the mid ocean ridges. The new crust is then pushed away from the ridge as newer crust comes to the surface. The ocean crust then spreads out enlarging the ocean. The farer away from the ridge the ocean crust is the older the crust
