The cleanliness of a ecosystem or how healthy it is. It determines how clean an environment/ecosystem is. You need all types of animals living there, therefore making it more healthy. The more healthy, the more we can say that it is biodiverse.
I think it's D. It shields life forms on the surface from radiation?
Answer:
In the anaphase, this is where the magical part of the process occurs. The chromosomes coil, and separate along with the centrosomes. Spindle fibers shorten and/or form, and the sister chromatids align in the equator of the cell.
Answer: A pictograph is a symbol for a word or phrase.
i hope this helps you :D
Primary succession would most likely occur after a lava flow.