Which of these chemicals can cause hermaphroditism, the presence of both male and female organs in an animal?
A. methylmercury
B. toxic lead
C. calcium carbonate
D. sodium chloride
Answer: A
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There are only 115 elements in the periodic table, but a far greater variety of materials that surround us. How is this possible?
What will be an ideal response?
The statement that "the same facies following one another in a conformable vertical sequence will also replace one
another laterally" is known as ____. a. Gressly’s principle b. principle of fossil succession c. Smith’s Law of Conformity d. Steno’s axiom
e. Walther’s LawWhat are the three main parts (zones) of a river system?
What will be an ideal response?
Which of the following is NOT accurately dated at between 4 and 4.6 billion years old?
A. the oldest dates on mineral grains on Earth B. isotopic ages on Earth's oldest known fossil shell C. age of the oldest meteorites D. age of moon rocks returned to Earth and dated