Disorders of collagen are characterized by deterioration of connective tissues. The reason w<span>hy you would expect such diseases to produce widely varying symptoms because </span><span>connective tissues and collagen inside it are found everywhere in the body! so almost all of body organs are involved in these disorders.</span>
The mantle is the largest layer
With the exception of echinoderms, invertebrates are protostomes; chordates, echinoderms and vertebrates are deuterostomes.
Answer:i just took a test w this on it n i put D
Explanation:
Fossil evidence because these changed occur over long time periods (millions of years).
