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a 20-pound sedimentary rock formed on a mountain cliff near the sea. the rock was made up of grains of sand, pebbles, and exoskeletons of tiny insects. it was held together by calcite. one day, the rock fell into the ocean and over time was buried deep inside earth. once inside, the rock was no longer sedimentary but instead turned into a metamorphic rock. after many years, it returned to earth’s surface. why did the rock not become an igneous rock?

a.
it lay in a region that was close to the salt-filled ocean.

b.
it contained organic material from a number of insects.

c.
it did not experience high enough pressure for compaction.

d.
it had not experienced high enough temperatures to melt.

e.
it had a composition that was not homogenous.

D. It had not experienced high enough temperatures to melt.

The correct answer is option D, that is, it had not experienced high enough temperatures to melt.

Explanation:

The rock did not turn into an igneous rock as for the formation of igneous rocks there is a need for a high amount of temperature such that it gets melt. Igneous rock cannot be formed from a sedimentary rock. The formation of the metamorphic rock can take place from an igneous or sedimentary rock, but an igneous rock cannot be formed from a metamorphic or sedimentary rock. The igneous rocks are formed when the molten magma gets cool and hardened.

d. in sexual reproduction, offspring have more chromosomes than

either parent.

asexual reproduction results in offspring which are genetically the same as the parent organism (not counting a rare mutation). sexual reproduction produces a random mixture of the genetics derived from both parents

explanation:

answer; 60-100; beats per minute