Whole human blood has a shelf life of 42 days, but in a 2011 government sponsored national survey, researchers found, an estimated one in 20 units of donated blood was thrown away. The Contact 5 Investigators asked One Blood how that could happen. I don't know about that. I can't comment on that, answered Michaels.
The climate of a tropical rainforest is very hot and wet. The average temperatures of a tropical rainforest are about 80 degrees F all year round with an exception of cool nights. The temperature of the rainforest has never dropped below 64 degrees F. It rains about 160-400 inches each year. In a downpour, only one-third of the rain that falls hits the forest floor.
Annual temperatures in the rain forest average between 20o - 30o C (68o - 86o F). Annual temperature range rarely exceeds 3o to 4o F. In fact, the daily range of temperature is often larger (10o - 12o F) than the annual range in temperature.