Answer: A. Earth and the Moon share many compositional characteristics
Explanation:
According to the giant impact theory, the Moon formed when an object of the size of Mars and geologically similar to Earth (which was called Theia by scientifics) crashed into the primitive Earth. With this collision, vaporized pieces of the crust of the young Earth were thrown into space. After this, the expelled particles were united by the action of gravity, creating the Moon.
This theory could explain in a certain way the reason why the Moon is predominantly composed of elements similar to those found on Earth, but lighter, making it less dense than Earth, since the material that formed it came from the crust, leaving the rocky core of the planet intact. This was verified by the samples of rocks brought from the Apollo missions, which indicate that it is composed mostly of the same components of the Earth.
Answer: A group of plants and animals that depend on each other for survival. If part of the eco-system changes, it affects the entire system. ... Plants could no longer grow, forcing animals to leave the area.
Explanation:
that is the answer
A. Seems the more logical answer to me
That is because metamorphic rock is formed by parent rocks that are either sedimentary rock or igneous rocks and we can use the former rock type to distinguish the type of metamorphic rock, marble was igneous rock exposed to high pressure or temperature.
While the other two type of rocks are formed initially by sedimentation and volcanic movements and has no parent rocks.
Answer:
students at the university who speak three or more languages is 2082
Explanation:
given data
students = 31230
random sample = 255
speak three or more languages = 17
solution
we consider here numbers of students at university who speak three or more language = x
so here we will use proportions
= 
........................1
solve it we get
x = 2082
so here students at the university who speak three or more languages is 2082
