Thus far no evidence has been found that nonionizing radiation, such as the energy given off by cell phones, causes cancer.
Answer the following statement true (T) or false (F)
True
Although there has been a great deal of public concern, no evidence has been found to link nonionizing radiation with cancer.
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The tricuspid valve is located between the right atrium and the right ventricle
____________________ Indicate whether the statement is true or false.
Which of the following statements about bone and its structure is NOT correct?
A. Bone tissue serves as a reservoir for calcium and phosphate ions. B. Bone tissue is not living because it contains inorganic calcium phosphate crystals. C. Bone contains an extracellular matrix of collagen fibers and inorganic calcium phosphate crystals. D. Bone marrow is a reservoir for blood stem cells E. Bone tissue is a special form of connective tissue.
Four of the following statements about lizards are true. Which statement is false?
A. Lizards are a very small component of the present-day reptiles. B. Lizards and snakes are more closely related to each other than to turtles. C. Some lizards are not predators. D. Lizards have overlapping scales on their bodies. E. All lizards have three-chambered hearts.
A small island has stable populations of plants and animals, including one species of hawk but no other large predators. A ship docks at the island, and the sailors hunt and kill most of the hawks. What would you expect as an immediate consequence?
A. an increase in the rodents B. an increase in the plants C. an increase in the insects D. a decrease in the plants E. a decrease in the fish