Where is the answers to pick from?
<span>In ecology, PPDF stands for Ponderosa Pine Douglas Fir.
In general, PPDF is used as a security of a document which exceeds what someone can do within the PDF software were itself. In ecology its PPDF genus is Pseudotsuga.
Other names which are marketed include
Douglas fir, Oregon, and Oregon pine.</span>
Answer: Cartilage and Bone are specialised forms of connective tissue. They are both made up of cells embedded in an extracellular matrix.
hope this helps :D
love your pfp btw :3
From what I can tell, The answer is either A or B. Mammals have what is called an Endoskeleton, which means that their skeletons are inside their bodies. A way to remember this is Exo- is similar to exit and when you exit something then you are going outside. Endo- sounds like into, which can relate to being on the inside. Insects have Exoskeletons, which are made from Chitin. Now Agonists are also called Prime Mover muscles, which means they are practically the same thing.
