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.
Tropical rainforest Explanation... Tropical rainforests are warm, wet environments typically located near the equator. They can receive as much as 400 inches of rain per year â¦ . The temperature remains warm (70Â°F to 85Â°F on average) all day long and year-round.Tropical rainforests produce 40% of the Earth's oxygen.ropical rainforest Explanation... Tropical rainforests are warm, wet environments typically located near the equator. They can receive as much as 400 inches of rain per year â¦ . The temperature remains warm (70Â°F to 85Â°F on average) all day long and year-round. Tropical rainforests produce 40% of the Earth's oxygen.