Establish which of the following is the basis for the explanation of the origin of life on Earth. A. organic matter was the original matter on earth
B. Organic matter produced inorganic matter on earth
C. the lack of ozone layer allowed simple organic matter to produce more complex organic matter
D. inorganic matter produced organic matter on earth

Why are adults bigger than they were as children biology

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).