Before Pasteur's experiments with beef broth and S-shaped tubing, what did people think about cells?
O A. Cells could generate spontaneously.
O B. Cells differentiate from stem cells.
O C. Cells came from preexisting cells.
O D. Cells do not contain a nucleus.

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

Which entry is in the wrong position in the table?