11. How does the introduction contribute to the development of ideas in the text? (Paragraph 1)
A It states how difficult it is to tell the rock types
apart.
B It describes the characteristics of the three types
of rocks.
C It suggests that some rocks are easier to identify
than others.
D it establishes the importance of knowing the
main rock types.

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

Apaid their profits to high officials