Petroleum and natural gas form from the remains of plants and animals buried in seas long ago heating and cooling of magma in underground chambers plant material that collected millions of years ago in swamps the decay of radioactive sediments under ground

What happens whenever a net force acts on an object

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of