Why would a scientist have difficulty using sound waves to measure the thickness of a very wide, solid rock mountain? a. Most of the sound waves would travel too quickly to be detected.

b. Most of the sound waves would not enter the solid rock..

c. Most of the sound waves would travel through the rock and continue moving straight, never to return.

d. Most of the sound waves would lose too much of their energy as they traveled through the rock to return

PLZ EXPLAIN Y THE ASWER IS RIGHT

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

answer; both surfaces of the membrane are nonpermeable

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.