Bacteria provides a valuable clue to the origin of life on earth. which of these is the most likely process by which bacteria was formed? a. appearance of new plants b. adaptation of living things c. geological transformation of earth's crust d. chemical transformation of non-living matter

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Energy flows from the producer level to the level. is called