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?
Over all the Mesozoic Era was dryer than in the Paleozoic Era. There were more deserts and less marshland. Within the three periods of the Mesozoic Era (Triassic, Jurassic and Cretaceous) there were times of wide temperature and seasonal variation.