Question

1. The crust comprises two distinct layers of sial and:
a. sima
b. mantle
c. core

2. The lower oceanic crust is also called:
a. core
b. mantle
C. sima

3. The main constituents of the core are iron and:
a nickel
b. magnesium
c. aluminium

4. Bauxite is an ore of:
a. aluminium
b. iron
c. manganese

5. Rock salt is an example of a:
a. igneous rock
b. metamorphic rock C. c.sedimentary rock
​

Answer 1

Answer:

1. a

2. c

3.a

4.a

5.c

Explanation:

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