Spontaneous generation was once hypothesized as a method by which new cells arose. The cell theory replaced this hypothesis, stating that new cells come from preexisting cells. Which example provides support for spontaneous generation rather than the cell theory?

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 statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

What would happen if the krill were removed from the food web