Planning the Ramp. There are critical elements that must be considered prior to hammering the first nail, such as the specific point of entry to your home, the available area for ramp creation, the slope of the ramp based on the height of the level that the wheelchair must get to and local building codes.
exists and is an alternate of . Warm air rising and cold air sinking in combination with the rotation of the Earth cause the various currents in the atmosphere. Warm air rising and cold air sinking in combination with the rotation of the Earth cause the various currents in the atmosphere.
Convection currents happen in the mantle and cause tectonic plates  to drift.   The earth is made up of the iron and nickel core, then the mantle  then the crust. And thâ¦e earths surface is made up of tectonic  plates. These plates move due to convection currents. 3 people found this useful.