Sweat, mucus, tears, and saliva all contain enzymes that kill pathogens.
A MYSTERIOUS ailment has been devastating the much studied lions of the Serengeti National Park in Tanzania, and scientists said yesterday that it had been identified as canine distemper, a viral disease that causes severe neurological symptoms and death.
In an open system such as a campfire, matter can <span>lose particles, gain particles or exchange particles.</span>
A part of the destiny of lion was a part
