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Author Question: Which of the following is a modern descendant of the gymnosperm plants of the Mesozoic? A) ... (Read 165 times) |
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.