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.
Step 5. Put the roast in the center of the oven for 18 to 30 minutes per pound of roast. For a rare roast, internal temperature should be 125 degrees, medium ranges from 130 to 130 degrees, and well-done registers 145 degrees.tep 5. Put the roast in the center of the oven for 18 to 30 minutes per pound of roast. For a rare roast, internal temperature should be 125 degrees, medium ranges from 130 to 130 degrees, and well-done registers 145 degrees.