John investigated the properties of two minerals and recorded his observations: Feldspar is gray, dull, and breaks apart when it is rubbed.
Quartz is purple, glassy, and leaves a white streak when rubbed against a streak plate.

What observations show evidence about the luster of the two minerals? (2 points)
a
Feldspar is dull, while quartz is glassy.

b
Feldspar is gray, while quartz is purple.

c
Feldspar breaks apart when it is rubbed, while quartz does not.

d
Quartz leaves a white streak when rubbed, while feldspar does not.

Question 11 (2 points)

The solid earth is made of rocks, which are made of minerals. To understand rocks you need to become familiar with minerals and how they are identified. This outcome gives you the background needed to understand the terms used in identifying minerals.

Explanation:

answer; i believe that the correct answer is culture based resources;

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.