What does this graph tell us about humans compared to other animals?

A) Humans have a brain that is unusually large for an animal of our size.
B) Humans have the largest brains of any animal.
C) Unlike the brains of other animals, human brains cannot be described by a straight line.
D) Based on averages determined from other animals, human brains are precisely the size we'd expect for animals of our weight.

A) Humans have a brain that is unusually large for an animal of our size.

Physics & Space Science

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Molecular clouds are mapped using CO instead of hydrogen because CO is much more abundant than hydrogen in molecular clouds

Indicate whether the statement is true or false

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Choose the statement below that does NOT help explain why the ionization energy of cadmium is so much larger than that of indium

a.The energy required to remove an electron from a filled subshell is much larger than the energy required to remove an electron from a nearly empty subshell. b. The atomic radius of indium is larger than that of cadmium. c. Electrons in the 4d subshell spend more time inside the closed shells than does the additional 5p electron and therefore are more shielded. d. The additional electron in the 5p subshell is at higher energy and therefore easier to remove from the atom.

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Physics & Space Science

Why did fusion cease only about 5 minutes after the Big Bang (at the end of the era of nucleosynthesis)?

A) The density of the universe became too low. B) There was no long any more hydrogen available for fusion reactions. C) Too many heavy elements were produced. D) Neutrinos carried off too much energy.

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Physics & Space Science

The alkali metals have ______________ valence electron(s)

Fill in the blank(s) with correct word

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Physics & Space Science