what is Used to represent the energy levels of a food web and shows how energy decreases at each feeding level

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.

Compare the two theories regarding the evolution of dinosaurs and then consider the cladogram above. although the two theories differ on the evolutionary path of dinosaurs, they agree that