Comparative embryology clarify the relationships among major groups of animals. the bilaterians, for example, can be divided into the based on the developmental fate of the blastopore.

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)

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach