How do scientists know that the mantle is less rigid than crustal rocks? Scientists use seismic waves to collect information about the mantle.
Scientists have collected samples from the mantle.
Satellite images provide information about the mantle.
Scientists use materials from volcanic eruptions to study the mantle.

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

What is the correct lewis structure for chloroform chcl3