There are four layers in the pyramid! Phytoplankton and Zooplankton are at the 4th layer. The squid is at the 3rd layer. The Seagull and Fish are at the 2nd layer. Dolphin is at the 1st layer!
Hope This Helps! Sorry if i'm wrong!
Prophase 1 of meiosis <span>relative to the number of chromosomes of a given species, accounts for a significant amount of genetic variation in gametes.</span>
The central nervous system(CNS<span>) includes the nerves in the brain and spinal cord.</span>
Cells contain structures called organelles.
This term means tiny organs.
The discovery of cells and their internal parts was made possible by the invention of the microscope in the 17th century.