<span>Mammals are advanced synapsids, animals distinguished by having extra openings in the skull behind the eyes; this opening gave the synapsids stronger jaw muscles and jaws (the jaw muscles were anchored to the skull opening) than previous animals.
Synapsids include the mammals, and their ancestors, the pelycosaurs, therapsids, and cynodonts. Pelycosaurs (like Dimetrodon and Edaphosaurus) were early synapsids, they were mammal-like reptiles. Later synapsids include the therapsids and the cynodonts (with multicusped post-canine teeth; they lived from the late Permian through the Triassic period).
The cynodonts led to the true mammals. Over time, the synapsid gait became more upright and tail length decreased</span>
They are changed because of the environments changing
Flu vaccination can help you from getting sick with flu. Vaccine reduces the risk of infection by working with body’s natural defenses to help them safely develop immunity to diseases. If you get sick, flu vaccine will make your illness milder.
John Dalton's theory states that atoms cannot be destroyed.
Answer:
Tay-Sachs disease results from brain lacking a specific type of lipid-digesting enzyme.
Explanation:
Tay-Sachs disease occurs when relatively large amounts of gangliosides are stored in the brain. It is the oldest lipid storage disease and is a hereditary disorder caused by deficiency of a lipid-digesting enzyme known as "hexosaminidase A", which cleaves a specific bond in the gangliosides.
Its deficiency cause accumulation of gangliosides in the lysosomes of BRAIN CELLS thereby causing degeneration of the nervous system.
