Judge the following sentence according to the criteria given below: Sharks have existed almost unchanged in Earth's oceans for more than 400 million years BECAUSE the relatively uniform conditions of the open ocean do not pressure organisms to adapt
A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct, but the reason is incorrect.
D) The assertion is incorrect, but the reason is correct.
E) Both the assertion and the reason are incorrect.
A
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How many covalent bonds would the following atom usually form?
A) 1 B) 2 C) 4 D) 6 E) It would tend to form ionic bonds.
Fog forms at humidity values less than 100 percent
A) because of a large concentration of condensation nuclei. B) because of a relatively small concentration of condensation nuclei. C) only over ocean areas. D) only over inland swamps and stagnant water areas.
What is a characteristic of the greenhouse effect?
A)Short wavelength radiation from the sun is reflected back into space. B)Most of Earth's radiant energy escapes into space. C)Industrialization plays an exclusive role in the process. D)Gases trap heat reflected back from Earth's surface. E)Transpiration significantly increases levels of greenhouse gases.
The best-known and most visually distinctive area of most cities is the
A) Central Business District. B) Central Residential Area. C) Government Ministerial Region. D) Suburban Retail District. E) Metro Transitional Area.