Which of the following statements is true?
a.
igneous rocks form from the cooling and crystallization of magma.
b.
fossils are frequently found in metamorphic rock.
c.
sedimentary rocks are formed as a direct result of chemical weathering.
d.
extrusive igneous rocks, found in the earth's lithosphere, are not subject to weathering.

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d