  Earth's atmosphere, on the other hand, is mostly nitrogen (78%) and oxygen (21%) with 1% being a mix of hydrogen, carbon dioxide and others. So you can see that Mars has much less atmosphere than the Earth does and oxygen make a proportionally much smaller fraction of of what there is than what we have on Earth.
Pickup trucks come in different shapes and sizes, and their weight entirely depends on the make and model. On average, a common pickup truck can weigh up to 3 tons, equivalent to 6,000 pounds.
Share this Image On Your Site. Facts About Trucks â Eighteen Wheelers. Legal weight for an eighteen wheeler. The legal weight for an eighteen wheeler is 80,000 lbs. [40 tons].[ 36287 kg Canadian] That is without any oversize or overweight permits. In comparison, the average automobile weighs over somewhere around 5,000 lbs.