Outer core is composed by liquid iron and nickel while inner core is composed by solid iron and nickel.
Answer: B. outer core.
Answer: TRUE.
Explanation: "Glory" is an optical phenomenon caused by water droplets, consisting of concentric rings and somewhat similar to a rainbow.
The glory consists of one or more concentric, successively dimmer rings, each of which is red on the outside and bluish towards the centre.
In order to see a glory, therefore, the clouds or fog causing it must be located below the observer, in a straight line with the Sun/Moon and the observer's eye.
Colored rings appearing surrounding the shadow of an aircraft flying above a cloud is sometimes called The Glory of the Pilot.
The answer is c a busy airport
<span>Radon may cause lung cancer when inhaled.
a: is formed by the breakdown of the ozone layer
b: may cause lung cancer when inhaled
c: binds with hemoglobin, preventing binding with oxygen
d: contributes to the breakdown of the ozone layer
e: in the atmosphere limits the availability of sunlight for plants</span>