When organisms have blank for a particular gene we call them?

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?

Using the drop-down menu, choose whether each organism is a producer or a consumer

Why are electrical outputs from a turbine generator highest during a spring tide? a high tide comes in faster. the gravitational pull of the moon is less. the sun and the moon pull in opposite directions. the difference between high tide and low tide is the greatest.