FIRST DOWN. All progress in a football game is measured in yards. The offensive team tries to get as much yardage as it can to try and move closer to the opponent's end zone. Each time the offense gets the ball, it has four downs, or chances, in which to gain 10 yards.
The largest eagle species in the world is the Pithecophaga jefferyi or Philippine eagle. This species of eagle is on the critically endangered list due to the rapid decline in habitat, which is the tropical rainforest. Keep Learning.
It is known in Maori legend as Pouakai and there is little doubt that early settlers would have fallen victim to this most terrifying of aerial predators! With a wingspan of between 2 and 3 metres, and weighing up to 13 kilograms the Haastâs eagle is the largest eagle ever to have existed in the world. It is thought to have been heavier in relation to wing size than any of the eagles alive today.