Where in the "Tree of Life" will current organisms be located that are most closely related to the common ancestor of all life on Earth?
A) at the branch between animals and plants
B) very close to the root
C) at the branch between Archaea and Eukarya
D) very far from the root
B
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What will you see with the following type of optic: Convex lens
A. Image is smaller |
B. Image is the same |
C. Image is larger |
Carbon dioxide is stored in four containers at different temperatures. Container 1 contains the gas at 200 degrees Celsius, Container 2 contains the gas at 300 degrees Celsius, Container 3 contains the gas at 400 degrees Celsius, and Container 4 contains the gas at 500 degrees Celsius. Which of the following containers contains the gas with the lowest opacity?
A) Container 1 B) Container 2 C) Container 3 D) Container 4
Equilibrium: A push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an angle ? below the horizontal, and the box remains a rest. The box rests on a horizontal surface that has some friction with the box. The normal force on the box due to the floor is equal to
A. W. B. W + P. C. W + P cos ?. D. W + P sin ?. E. W - P sin ?.
Two isotopes of uranium have the same
a. mass number b. neutron number c. atomic number d. nucleon number e. nucleon number and neutron number