Vertebrates developed about 550 million years ago. The oldest vertebrate fossils are those of FISH with no jaws. These e<span>arly jawless fish did not have paired fins and their bodies were covered with heavy, bony scaled, but their skeletons were made of cartilage. For the next 50 million years, they were the only vertebrates.</span>
It takes three minutes for the clinical death of the brain to die
Cells in onion peels are dead and the ones in spinach are alive.
Answer:
Domains
Explanation:
All Biological organism can be classified or placed in a group.
Taxonomy is a branch of science that deals with naming and classification of biological organism based on shared characteristics.
In taxonomy, a domain is the highest order of classification or ranking ,its even higher than the kingdoms.
It is inclusive of all biological grouping.
All cellular organisms can be placed in any of the three domains namely, Bacteria, Archaea and the Eukarya.
Law of Magnetism. The most basic law of magnetism is that like poles repel one another and unlike poles attract each other; this can easily be seen by attempting to place like poles of two magnets together.