Answer:
b. False
Explanation:
The trenches are not physical features that occur on places where there are subduction zones between the tectonic plates, but they do not appear on places where there are divergent plate boundaries. The trenches are simply very deep, narrow, ocean beds, that have very steep sides.
The divergent boundaries are the opposite boundaries from where the trenches occur. These boundaries occur between tectonic plates that move away from each other. The typical physical feature at this type of plate boundaries are the mid-ocean ridges (if it occurs in an ocean), or the rift valleys (if it occurs on land).
This type of boundary produces new crust on Earth, and they also can split a tectonic plate into two separate plates, or even give rise to a new continent.
The Midwest is one of the best major areas in the world when it comes to large scale farming. There are several natural factors that contribute to the Midwest having very good characteristics for farming.
The region's climate is mostly semi-arid. The precipitation levels are relatively low and they only occur seasonally. The summers are hot and dry, the winters are cold and snowy, while the spring and autumn are mild and more rainy.
The region comes to be in a a somewhat rain-shadow from both sides, with mountain ranges blocking the influences from the oceans.
The whole area is valley-like, and it has relatively low elevation.
Naturally, this region has been covered by grasses, which are actually the main factor that provided enormous amounts of biomass, making the soil very deep and fertile.
The area doesn't have forests, which is good for the plants because it enables the winds to blow freely, which is always great for the plants in order to not catch diseases, and to have proper aeration.
D I think (I just know north European plains are similar to American Midwest)
The answer exactly is Bass time high
Explanation:
Given the importance of oxygen for animals, researchers suspected that a sudden increase in the gas to near-modern levels in the ocean could have spurred the Cambrian explosion. ... This supported the idea of oxygen as a key trigger for the evolutionary explosion.
