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In-s [12.5K]
3 years ago
9

Identify the true statement. a. As the sea floor spreads, the lithosphere rises to fill the space between plates. b. Some magma

generated during seafloor spreading erupts from submarine volcanoes. c. New oceanic crust is ultramafic in composition. d. Some magma generated during seafloor spreading spills out to produce a new layer of seafloor called gabbro.
Geography
1 answer:
zlopas [31]3 years ago
6 0

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.
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Decomposers are important to ecosystems because they
Anastaziya [24]

Answer:

They break apart dead organisms

Explanation:

Decomposers play an important role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.

7 0
3 years ago
151
icang [17]

C. divides the flow of river systems in the United States into east and west

Explanation:

The continental divide divides the flow of river systems in the United States into east and west. The divide separates water bodies that runs into the Atlantic from those going into the Pacific ocean.

  • The divide is the most prominent rocky feature that separates water bodies in the Americas.
  • It runs from the Andes down south to the Rocky up North.
  • It is a distinct mountain range that typically follows a linear form.

Learn more:

Continental crust brainly.com/question/10537829

#learnwithBrainly

6 0
3 years ago
What is the (approximate) fractional difference in time between the sidereal day and the solar day? (Is it one tenth? One hundre
antiseptic1488 [7]

Answer:

0.9972

Explanation:

The sidereal day has a duration of 23 hours 56 minutes and  4 seconds approximately. The solar day has a duration of 24 hours. We have to convert the previous times to seconds:

Solar day:

24h*\frac{60min}{1h}*\frac{60s}{1min}=86400\\

Sidereal day:

23h*\frac{60min}{1h}+56min=1436min\\1436min*\frac{60s}{1min}+4s=86164s

Now, we calculate the fractional difference:

\frac{86164s}{86400s}=0.9972

5 0
3 years ago
Match the country in column 1 with its colonial history in column 2.
kompoz [17]

Answer:

Portugal ⇒ Ruled east of the line of demarcation

After the New World was rediscovered by the European powers and saw competition between the Spanish and the Portuguese, Pope Alexander VI came up with a Line of Demarcation to divide the New World. Portugal was to rule over every land east of the line which is why they colonized Brazil.

Russia ⇒ Controlled what is Alaska today.

Russia controlled what is Alaska today but then decided to sell it to the United States rather than risking the British taking it by forced and adding it to Canada.

Britain ⇒ Controlled the area of today's eastern United States.

Britain ruled the eastern part of today's United States and it was here that they established the colonies that became the first states of the United States of America when these colonies defeated the British in the American Revolution.

Spain ⇒ Ruled west of the land of demarcation

As explained above, Pope Alexander VI came up with a Line of Demarcation. This allowed Spain to rule lands west of this line such that they gained colonies such as Mexico and countries to the west of South America.

8 0
3 years ago
In addition to surface tension, what's responsible for driving ocean waves? 
Eva8 [605]

Answer:

The drag from wind holds the responsibility for driving ocean waves in addition to the surface tension.

Explanation:

The ocean currents at the first 100 m of its surface is moved by the wind drag.  Whereas, the ocean currents flowing below the thousand meters of its surface are driven by water's density gradient, which is governed by thermohaline circulation, 'thermo' means temperature and 'haline' means salinity. The centrifugal force has no role to do in driving the ocean current in its surface and earth's rotation causes the Coriolis effect which is an example of hurricane winds.

6 0
3 years ago
Read 2 more answers
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