Answer:
Option (A)
Explanation:
In the above-given question,
Option (B) is wrong with it's usage of the modifier "how'' in the sentence. If the modifier is used in one place (how heat from the inner core flows), it should also be used in the continuing clause (how the formation and periodic reversal).
Options (C) and (D) are wrong in using the word "are" for the whole sentence as there is no need to use this word. The verb form will depend on the subject, in this case, is "the discovery that earth's inner core" which is singular in nature. Thus, the verb form will be -is and not -are.
Option (E) is wrong for it's use of the comma. If the comma is used, then the whole sentence is not a full-fledged sentence but rather a dependent clause with no resolution.
The correct answer for the given passage is option (A).
Answer:
El espacio rural se compone de áreas no urbanas. Son espacios no ocupados por ciudades o densidades de población. La mayoría de las actividades productivas propias de este espacio están relacionadas con la agricultura, la ganadería y la extracción.
Explanation
Para comprender mejor el alcance conceptual que envuelve el espacio rural, es necesario distinguir las expresiones rural y agraria. Las actividades en las zonas rurales no siempre son agrarias. Cada vez es más común utilizar el campo para actividades turísticas, deportivas, áreas de preservación ambiental, balnearios, clínicas, centros de investigación, entre otros, que no están vinculados a actividades agrarias.:
Answer:
Birth rate.
Explanation:
Countries such as Japan are dealing with a low Birth Rate, meaning the population is aging due to the lack of births to lower the average age.
Convection<span> in the solid mantle drives the many processes of plate tectonics, including the formation and movements of the continents and oceanic crust.</span>
