Answer:
The answer is the phosphorus cycle. Osteoporosis is the loss of bone mass due to loss of mineralization of bone hence making the bone weak and spongy thence prone to fractures. Phosphates, and calcium, is one of the minerals used to make bone strong by filling in the spaces in between the osteocytes and collagen of bone.
Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
Energy in organisms is called ATP (specifically energy in the cell). I hope I helped!
Geothermal Energy is the heat energy generated and stored in the earth.
