Give Reasons 1, A camel has water pouch . Why? 2, Birds have air sacs . Why? 3, Aloe has thick and fleshy leaves. Why?

1*since a camel is a desert animal it has a water pouch to store water to enable it to endure dry periods.

2*birds have airsacs to enable it to float in space in order to fly.

3*Aloe has thick and fleshy leaves to store water for use during dry times.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.