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.
Location and Climate. The land between the Tropic of Cancer and the Tropic of Capricorn is home to the worldâs tropical rainforests. With its average temperature between 20 to 25 degrees Centigrade and 2000 to 10,000 millimeters of rainfall per year (Rainforest Biome, pars. 1,2) it supplies the greatest amount of plant growth of all the biomes of Earth (Tropical Rainforest Overview, par. 1). Tropical rain forests are located closer to the equator then temperate rainforests (Rainforest Biome, par. 5). The Amazon hosts the worldâs largest tropical rainforest. Twenty percent of plants and birds on Earth, and ten percent of mammal species can be discovered in the Amazon.