The correct answer to the question is letter D. Economic Regions
The other type of a region that characterises low precipitation would also be a semiarid or a steppe. In addition, this specific kind of region usually consists of little to no vegetation. The area could only grow grasses and no trees can be seen in this region because of its barren descriptions.
A simple stain is used to show that bacteria is present and what they look like opposed to other matter. a differential stain is used to separate organisms into groups.
Explanation:
we depend on them for drinking water
they are home to lots of species
they are the source of our irrigation for agriculture
All of the above are reasons why freshwater biomes are important.
Answer:
D. magnetic polarity reversals
Explanation:
The marine magnetic anomalies are the result of two things; the seafloor spreading at the mid-ocean ridges and the magnetic polarity reversals.
The mid-ocean ridges are the places where the new crust forms. This places also have big influence on the magnetic anomalies, with the reason being that the magnetism has higher influence in this parts.
Also, the magnetic polarity reversals play a big role. The Earth has not always had the same magnetic polarity, and multiple times throughout its past the North and South Poles have been switching places when it comes to the magnetism.
The igneous rocks on the ocean floor have proof in them about this, as the metallic components are reacting to the magnetism and face toward the stronger magnetic field.
