Does should be do. Thanks have a great day.
The correct answer is Chitin. Arthropods have an exoskeleton made of chitin. Usually, arthropod exoskeleton is wrapped by tough and thickened chitin that has many minerals and hardened proteins. Chitin can be found in the exoskeleton of crabs, lobsters, shrimps, and even squid.
Answer:Primary succession occurs on land that is new and has never had a flora and fauna example: glacier retreats, lava flows. Secondary succession occurs on land that has been cleared example: by fire, of flora and fauna, but which still has viable seeds and spores in the soil.
Answer:
Explanation:
Biodiversity, also called biological diversity, the variety of life found in a place on Earth or, often, the total variety of life on Earth. A common measure of this variety, called species richness, is the count of species in an area.