All cancers are caused by viruses
A. true
B. false
B
You might also like to view...
Salt is often used to melt ice on roads during the winter because it lowers the freezing/melting point of water. When salt dissolves in water, individual Na+ and Cl- ions break away from the salt lattice and become surrounded by water molecules. Why would this cause ice to melt?
A. Hydrogen bonds are broken, and the salt ions interfere with interactions between H and O. As a result, it is more difficult for water molecules to bond and form ice. B. Hydrogen bonds are formed, and the salt ions bond with O. As a result, it is more difficulty for water molecules to bond and form ice. C. Hydrogen bonds are broken, and the salt ions bond with O and H respectively. As a result, it is more difficult for water molecules to bond and form ice.
Mud is composed of:
a. dirt and water. b. iron and diatoms. c. clay and silt. d. calcareous and siliceous ooze. e. sand and clay.
Four of the five choices listed below are true for
gibberellin. Select the exception. a. breaks dormancy in buds b. first isolated from a fungus c. causes stem elongation d. triggers flower production e. overcomes genetic dwarfing
What is the most serious consequence of untreated dehydration?
a. syncope b. death c. heat exhaustion d. heat stroke