Air currents are caused by differences in temperature, which are created by
a
energy from the Sun heating Earth.
b
energy from the Moon heating Earth.
c
energy from volcanic eruptions on Earth's surface.
d
energy from geological processes within Earth's core.
a) energy from the Sun heating Earth.
A tropical rain forest is able to meet the needs of many plants, animals, insects, and birds because temperatures are
a
warm all year, and there is a lot of rainfall.
b
warm all year, and there is little rainfall.
c
cold all year, and there is a lot of rainfall.
d
cold all year, and there is little rainfall.
a) warm all year, and there is a lot of rainfall.
The correct answer is a) energy from the Sun heating Earth.
Explanation: Air currents, also known as winds, are primarily caused by differences in temperature. The Sun emits solar radiation, which reaches the Earth's surface and heats it unevenly. This uneven heating creates temperature variations across different regions of the Earth's surface. As a result, the air above these regions also becomes heated to different degrees.
Since warm air is less dense than cold air, it rises upwards, creating areas of low pressure. Meanwhile, cooler air from surrounding areas moves into these regions of low pressure, creating air currents. These air currents are responsible for the movement of air masses, resulting in the formation of weather patterns, such as winds, storms, and other atmospheric phenomena.
Therefore, the energy from the Sun heating the Earth is the primary driver behind the differences in temperature, which in turn generate air currents.