Chitin<span> is the main ingredient in the exoskeletons of arthropods and crustaceans and is also in the cell walls of fungi. That means everything from beetles, spiders, and butterflies to lobsters, crabs, and shrimp have some </span>chitin<span> in their protective armors.</span>
<span>D. 23 pairs of chromosomes are arranged from smallest to largest.</span>
Answer: The baseball is a sport played in the eastern United States.
Explanation:
This game is called as the national pass time because this game is played and enjoyed by millions of people to pass their time in leisure activity and enjoy with the team mates and friends.
This sport is continued to be enjoyed in summer and spring. It was named so more than 150 years ago.
