D, combination of all the them
A magma's viscosity is directly related to its
SILICA CONTENT
Along with the fact that the infrastructural and industrial levels of the African colonies was never really developed by Europeans, the many various and opposing ethnic groups had no one to keep them in check now. As a result many civil wars took place between different religions, specific religious denominations, and specific ethnic groups of said religious denominations. Also nearly all of the leaders that broke free of European rule were woefully unprepared to lead a country both governmentally and economically. All of these factors are what lead to Africa's current problems.
Answer:
8. B. we see comets when they approach the sun.
9. A. the sun's surface.
Thank you for posting your question here at brainly. I hope the answer will help you. I think the statement "<span>Deep within the jungles of mexico and guatemala lie most of the mayan ruins." is true.
</span><span>The Maya ruins of Belize include a number of well-known and historically important pre-Columbian Maya archaeological sites.</span>
