You should be able to find this on a map.
Answer:
a. red-brown
Explanation:
Specular Hematite is a mineral which is found in rocks and soils. The crystal of specular hematite is greyish black in color but it can form the streak of reddish color which is due to the presence of iron oxide. It has metallic luster which gives a look like silver and has shiny flakes.
Yes they can, using both seismographes they find the epicenter of the earthquake.
The answer is Agriculture.