Answer:
extrusive rocks.
Explanation:
When an igneous rock contains large crystals of minerals surrounded by the fine grained or glassy material (set in a matrix of glassy part).The texture is known as Porphyritic texture and the large crystals are known as Phenocrystals and the fine grained or glassy part is called as Ground mass.
When this Porphyritic texture showing igneous rocks are known as Porphyrites. The texture is largely found in volcanic and hypabassal rocks so these rocks are the extrusive rocks.
Obsidian is volcanic glass compared to other igneous rocks , there’s also no proper crystallization compared to the other igneous rocks
Answer :
(A). Charles Lyell correctly explained how fossils form and formulated some of the basic principles of relative dating
Explanation:
Charles Lyell was a Scottish geologist who demonstrated the power of known natural causes in explaining Earth's history.
Relative dating is the science of determining the relative order of past events, without actually deciding its absolute age.
Charles Lyell's principle of inclusions and components, explains that, with sedimentary rocks, if inclusions are found in a formation, then the inclusions must be older than the formation that contains them.
Answer:
The European settlement in the Americas from 1500 to 1790 was most often voluntary migration.
Explanation:
Voluntary migration; is correct because the vast majority of the people from Europe that migrated to the Americas in this period migrated voluntarily, be it because of economic reasons or because of their adventuristic nature.
Internal migration; is not correct because this is a migration that happens within the borders of a country.
Interregional migration; is not correct because the migration was going only in one direction, but in several regions from multiple regions.
International migration; is not correct because the migration was limited, a lot of people from other parts of the world were not allowed to.
Forced migration; is not correct because this was not the principle used for this particular migration.
Answer:
Punjab
Explanation:
This area is the most densely populated city in Pakistan
