You step on a sharp rock, your leg jumps upward, and a moment later you feel pain in your foot. describe a relationship between cells, tissues, and organ systems involved in this response.

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

The more rapidly sedimentation occurs, the more likely it is that the remains will successfully form a fossil. as sedimentation continues, what happens to the amount of weight settling onto the organism? stays the same increases decreases cuts in half