A. the accepted meaning of a term
The giant continent was called...
a. Pangaea
Answer:
The answer is the Geography Hypothesis.
Explanation:
The geography hypothesis holds that the differences in prosperity that are found around the world are due in large part to forces of nature, like the differences in geography, climate, and ecology that are evident in different regions of the world. The geography hypothesis emphasizes how the natural environment can explain why some nations are more prosperous than others. In contrast, the institutions hypothesis emphasizes the influences that are made and caused by humans. Human poverty is largely man-made in the institutions view.
True, A 'planar projection map' is helpful for sea navigation.
<u>Explanation:
</u>
A 'planar projection map' that shows the particulars of the globe in a flat surface projection. The pictures projected by the map are shown in rectangular-shaped. If any other map such as Cylindrical map is used then, the edges are not so perfect, they show distortion. With the help of all three coordinates, it shows a 3-D picture of the globe and its objects which can be considered almost as real as the actual object. They are also known as azimuthal projections and are mostly used in projecting polar regions.
Answer:
C. plagioclase
Explanation:
From the magma silicate crystals are formed successively when the magma temperature reaches the typical melting temperature for each type of crystal. The first crystals formed at high temperatures can then change their composition or dissolve again. In this way the crystals already formed contribute their ions, molecules and atoms to magma and combine again forming new crystals whose melting temperature is lower than that of the first crystals formed. The new crystals are said to be stable at the lowest temperatures set now. These processes of change are called reactions. As several successive reactions occur as the magma temperature decreases the ordered series of reactions is called the BOWEN series in honor of the Canadian scientist who formulated this concept. There are two types of reactions, the continuous reaction and the discontinuous reaction.
<u>
By continuous reaction a crystal formed at high temperatures such as a plagioclase rich in the Ca2 +</u> component gradually varies its composition by replacing a portion of the Ca2 + ions with the Na + ions and a portion of the Al3 + ions with the Si4 + ions. To maintain its neutrality, the replacement of Ca2 + by Na + is coupled with the replacement of Al3 + by Si4 +. The series of continuous reaction starts from the plagioclase rich in Ca2 +, passes through several plagioclase of intermediate composition towards the plagioclase rich in Na +
