How do rocks record changes in earth's magnetic field

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

What is the similarities and differences between bacteria and eukaryote?