What is most likely the amount of energy available at a trophic level of tertiary consumers if the amount of energy available to secondary consumers in that food web is 200 kilocalories? 0 kilocalories
20 kilocalories
200 kilocalories
2,000 kilocalories

Skulls of (1) modern gorilla, (2) australopithecus afarensis, (3) homo erectus, (4) homo neanderthalensis, (5) homo sapiens based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ? (2 points)

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent