Rivers are the primary body of water found in tropical rainforests. Many rainforests feature one large river that feeds the entire ecosystem and many smaller rivers that drain into the major water body, such as the Amazon river and its many tributaries.
1 Cook in the oven for 30 minutes at 325 degrees F (165 degrees C). 2  Reduce the heat to 300 degrees F (150 degrees C), and cook for 1 1/2 hours. 3  Remove roast to a platter to rest for 10 to 15 minutes. Return meat to pan, place remaining bay leaf on top of meat, and cover. 2  Cook in the oven for 30 minutes at 325 degrees F (165 degrees C). 3  Reduce the heat to 300 degrees F (150 degrees C), and cook for 1 1/2 hours.
20 â 30 minutes per pound is the approximate cooking time for a roast â but you have yourself one mighty big roast! Just be sure to use a meat thermometer for an accurate temperature. Check the thermometer by peeking in the window of the oven rather than continually opening the oven door.ooking a Loin Roast: There are many different ways to cook this roast. (Google lists over 1 million options!) According to the Joy of Cooking, cooking the roast for 10 minutes at 450 F. degrees and then reducing the temperature to 250 F. will ensure a tender, moist, flavorful roast.