Answer:
A freed thousands of slaves.
Explanation:
The Dred Scott decision was to freed thousands of slaves.The decision was to freed the slaves in any form.
He was the enslaved American African man.His color was black that is why he and his peer was unable to get proper justice in the United state .During 1857 he took a important decision regarding slavery in United states.
Answer:
Large scale agriculture will definitely lead to increased CO2.
Explanation:
This is due to the fact that plants give out oxygen and take in CO2 which is released by animals and man , so due to the large scale agriculture, the excess oxygen released by plants purifies the air of poisonous gases like carbon monoxide and leaving it with carbon dioxide- CO2.
Answer:
Option (1)
False
Explanation:
The mid-oceanic ridge is one of the main features in the divergent plate boundary. Seafloor spreading takes place along this ridge, where the lithosphere becomes thin because of the uprising magma. The magma erupts at the surface forming a ridge which is commonly known as the mid-oceanic ridge.
As the magma melts at this ridge due to the decompression process, it solidifies and forms young basaltic igneous rocks. These are geologically the youngest rocks. With the increasing distance right from the mid-oceanic ridge, the age of the rocks increases.
Thus, the correct answer is option (1).
At this mid-oceanic ridge, when the magma erupts at the seafloor, it is comprised of magnetic minerals, which shows a specific pattern in the orientation of the earth's magnetic polarity. This forms alternate stripes, that starts from the mid-oceanic ridge and eventually expand outward. This pattern of earth's magnetic polarity is found in all the mid-oceanic ridges on earth.
Hence the given statement is false.
