Answer:
d. Some magma generated during seafloor spreading spills out to produce a new layer of seafloor called gabbro.
Explanation:
- The magma is spilled from the mid-oceanic ridges and spreads onto the seafloor creating a newer seafloor.
- This is why it's called as the divergent boundary due to the spreading of magma on both sides of the floor. Grabbo is a coarse-grained mafic intrusive igneous rock and is formed at the oceanic ridges.
In a time before railroads and highways, the Great Lakes and St. Lawrence River served as the primary transportation system. Many of North America's largest cities were established along the waterway as commerce flourished between their ports. Today, Great Lakes-Seaway shipping is equally important.
The best and most correct answer among the choices provided by your question is the fourth choice.
The geography of the Mayan civilization different from the geography of Mesopotamian civilization because t<span>he Mayan civilization was not built around a major river.</span>
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The phrase that compares a trace fossil to a fossil that forms as a result of an entire organism being trapped in amber is D. Both can possibly be used to study the organism's size and relative age of a rock.
<h3>What is a fossil?</h3>
A fossil is a remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.
In this case, the phrase that compares a trace fossil to a fossil that forms as a result of an entire organism being trapped in amber is that both can possibly be used to study the organism's size, and relative age of a rock.
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The answer is A, four weeks (the lunar cycle is about 29.5 days).