How does the ecological footprint of the united states compare with the world average ecological footprint?

Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations

Pulmonary arteries carry highly oxygenated blood. true or false?

The pacific plate is an oceanic tectonic plate. how did a hot and the pacific plate interact to form the hawaiian islands?