NO LINKS PLEASE Why are there always more producers than consumers in an ecosystem?

O A. Plants do not carry out enough photosynthesis to supply the needed oxygen to primary consumers.

O B. The Sun cannot supply enough energy to support many predators.

O C. Energy is lost in food chains so many secondary consumers cannot be supported.

OD. Many consumers would contribute too much carbon dioxide to the carbon cycle.

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.