The answer is in the question, because they use Gas.
autos have 4 stroke, mopeds and lawnmowers use 2
There are three basic types of lawnmowers. Hover lawnmowers, which hover over the grass, cylinder lawnmowers, which are your typical lawnmower, and rotary lawnmowers which are for heavy duty lawn mowing.
You use a lawnmower to cut your grass and to keep it neat and tidy. You can use a lawnmower to collect fallen leaves in Autumn,
Fossil fuels.
We dont have to use Fossil Fuels
Yes, they use fossil fuels and they use liquid hydrogen and liquid oxygen.
they use a combo of fossile and non-fossile fuels
All cars use fossil fuels somewhere in their energy cycle.
fossil fuels are like coal they are mined. they are mining fossil fuels for money
racing on lawnmowers
Most countries burn fossil fuels to generate electricity.If they used solar power to generate electricity, thenThey would not have to use so much fossil fuel.Solar Energy itself does not reduce the use of fossil fuels. But the use of solar energy should hopefully reduce the need of fossil fuels to create energy, so therefore the more we can use solar power as an energy source instead of fossil fuels, the more we reduce the use of fossil fuels.