The primary sector<span> of the economy extracts or harvests </span>products<span> from the </span>earth<span>, </span>such<span> as raw materials and basic foods.</span>
The Black Plague was the major contributor
Answer:
i dont really know but i thinnk it would be III,IV and V
Explanation:
Green house effect is the trapping of heat by some gases ! mainly in our earth this is increasing due to CO2 !