Heads do not have to be ground because they are aluminum. If you're taking both heads off then you need 2 new gaskets. It's not a bad Idea to replace both if one is leaking though because the other one might not be far behind.
Not if the manufacturer is still in business.
No, it is nothing like the scope of renewing the motor. - To do that you would have to fit new valves, have the heads re-ground, replace the main and rod bearings and re-ring the pistons (at least)
Gives nutrients to the ground and does need a lot of room to grow because of the small branches.
No, nothing is put in the ground to replace crude oil.
Most or all pool skimmers do not have gaskets. However, above ground pools have gaskets that go between the face plate and the liner on one side. On the other side the gasket goes between the back plate and the liner. Can someone confirm that?
Because they are made from aluminum, and recycling uses far less energy than producing new aluminum out of the ground. We need to save energy. Recycling is a great idea! But not just the tabs. The whole can, if it is made from aluminum, should be recycled, as well as the tabs.
Aluminum is widely used for many things, so there is a constant need for it. Recycling used aluminum goods into new aluminum takes only a fraction of the energy needed to smelt new aluminum from bauxite ore. Hence, recycling aluminum is "green" in two ways: It reduces energy use, and it preserved the deposits of aluminum ore (bauxite) still in the ground.
2 valence electrons are in an aluminum atom in the ground state.
remove the lower unit of the motor (the part with the prop attached to it) by loosening the four bolts which hold it on, as you are doing this be carefull to hold the lower unit in place when loosening the last bolt so it doesn't fall to the ground. Inside the unit is a small box held on by four bolts, this is the water pump, remove the four bolts and the gaskets (there are three gaskets two rubber gaskets which sandwich a metal gasket). The small turbine lookin thingy is the impeller. Remove the impeller inspect the casing and gaskets for cracks or damage. If the water pump housing is cracked or damaged replace it same with the gaskets. Install new impeller and repeat thes steps in reverse order to re-assemble.
Yes, bauxite is the ore of aluminium (aluminum). It is normally found close to the surface so is strip or quarry mined.
Yes, aluminum is easy to recycle and uses far less energy than making new aluminum from bauxite dug out of the ground. So recycle all those cans!
If the aluminum has iron attached to it it will be picked up by the magnet otherwise it will remain on the ground.