This diagram shows the "tree of life" based on genetic studies of relationships between living organisms. Which statement about the tree of life is not true?
A) It shows that plants and animals are the two most dominant forms of life on Earth today.
B) It shows that all organisms alive today bear genetic similarities that suggest they evolved from a common ancestor.
C) It shows that, based on genetic relationships, there are three major branches of life on Earth.
D) It shows that there is greater genetic diversity in microscopic organisms than among animals.
A) It shows that plants and animals are the two most dominant forms of life on Earth today.
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Equal but opposite charges Q are placed on the square plates of an air-filled parallel-plate capacitor
The plates are then pulled apart to twice their original separation, which is small compared to the dimensions of the plates. Which of the following statements about this capacitor are true? (There may be more than one correct choice.) A) The energy stored in the capacitor has doubled. B) The energy density in the capacitor has increased. C) The electric field between the plates has increased. D) The potential difference across the plates has doubled. E) The capacitance has doubled.
In a game of pool, the white cue ball hits the #9 ball and is deflected at a 35° angle to the original line of motion. What is the angle of deflection below the original line of motion for the #9 ball?
A) 15° B) 35° C) 55° D) 75° E) 90°
Which was the source of lava during the flooding stage of the Moon's development?
a. moonquakes and tectonic shifts b. lower crust and upper mantle c. the deep core d. volcanoes e. impacts
Which of the following molecules is polar?
A) a B) b C) c D) All are polar. E) Only A and C are polar.