Use the drop-down menus to identify the tectonic plates labeled a, b, c, and d. label a label b label c label d

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.