1 Only about 1 percent of Michiganâs maple forest resource is used in maple syrup production. 2  In an average year, each tap-hole will produce about 10 gallons of maple sap, enough for about a quart of pure Michigan maple syrup.
A mass extinction marked the end of the Mesozoic Era The Mesozoic era is the era of dinosaurs and lasted 180 million years. This era includes 3 well-known periods - Triassic, Jurassic, Cretaceous. A mass extinction marked the beginning and the end of the Mesozoic Era. Was this helpful?
More birds evolved, and reptiles got bigger. Dinosaurs were still dominant, and carnivorous dinosaurs were more prevalent. At the end of the Cretaceous Period, and the end of the Mesozoic Era, came another mass extinction. This extinction is generally called the K-T Extinction.