Answer:
D. If water is hard to find....
Explanation:
humans need water. without it, we will die so it's natural for us to want to be close to what we need (water). this is also why ancient civilizations like in egypt and mesopotamia were built near rivers
Answer:
The spread of information to many people
The sharing of scientific knowledge and discoveries
A decrease in cost of all books
Explanation:
Took the test
Answer:
Th similarities between the black hole and the neutron star is that they are formed from dead (dying) starts. But they come from different parent stars, if the parent star is 1.4 times the mass of the sun, a neutron star will be formed, but if the parent star is twice the mass of the sun a black hole is formed.
Explanation:
A black hole is defined as an area of space whereby the matter is so compacted that nothing can escape from it. This area is called <em>event horizon. </em>Black holes are formed when an enormous star dies in z supernova. They weigh at least twice the sun's mass, and their mass is directly proportional to their radii.
Neutron stars are created during supernova and maintained by a neutron called <em>degeneracy pressure.</em> Neutron star has a small radius, typically 30 km, with a very high density made up of compacted neutrons.
<u>Answer:</u>
Non conformity is the type of unconformity separating the 2 rock strata.
<u>Explanation:</u>
There are 4 types of unconformities, among which the non conformity is the type of unconformity that separates two rock types while one among them is younger and the other is older. It usually exists between young sedimentary rocks and old igneous or metamorphic rocks. The non conformity refers to the old erosional feature on the underlying rock. It also suggests that, a long term uplift has taken place.
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
