1. In the middle of the continents
The oldest rocks on our planet can be found in the middle of the continental masses. Such places are the interior of Australia, from where the oldest rock have actually been found, Siberia, Central Africa, the interior of Canada, the interior of Brazil... The reason why this is the case is because of the subduction that occurs between the plates. The oceanic plates are the ones that subduct, thus their crust is getting destroyed, so their rocks are younger. The continental plates, on the other hand, are not getting subducted, but instead they either collide with other continental plates, or go above the oceanic plates that subduct below them, thus their crust is usually not destroyed, except on the surface part where the weathering and erosion are taking part.
2. at conservative boundaries
The conservative plate boundaries, more commonly referred to as transform plate boundaries, are the ones where the tectonic plates are sliding past each other. Instead of the plates moving toward each other, or away from each other, at these boundaries the plates are moving in sliding past each other while moving in opposite directions. The pressure between the plates on these boundaries results in cracks in the crust, known as faults, and they are parallel to the plate boundary. Also, these boundaries are very active geologically, and they often cause earthquakes to occur in the surrounding area.
Answer:
Sunlight cannot penetrate into the deeper oceanic zone
Explanation:
The oceans are extensively large bodies of water and are comprised of varying depth from place to place. The equatorial and the tropical region receives the maximum amount of sunlight as a result of which the ocean surface temperature rises significantly. So, the surface water up to a depth of about 200 to 300 meters below the sea level remains warm, as sunlight can easily penetrate in this zone.
But, at a depth more than about 300 meters to a depth of 1000 meters, this sunlight cannot penetrate and due to this reason the water in this zone remains cold enough. Thus, the temperature of the ocean water decreases with the increasing depth.
<span>Subsistence farming involves farmers growing just enough food that will be adequate for them and their families. So no surplus is farmed for sale. The Green Revolution allowed larger crop yield for farmers by introducing resistance strains, fertilizers and pesticides. As you can imagine, the wide spread use caused a very negative impact on the environment. Subsistence farming was basically revamped by the Green Revolution to allow surplus be produced for sale in developing nations.</span>
C the lithosphere ........A condition of gravitational and buoyant equilibrium between Earth's lithosphere and asthenosphere.
