<u>Answer: </u>
- <em>The world in spatial terms.
</em>
- <em>Places and regions.
</em>
- <em>Physical systems.
</em>
- <em>Environment and Society & Uses of geography.</em>
<u>Explanation</u>:
<u><em>The world in spatial terms</em></u><u><em>: </em></u>The world in spatial terms deals with where things are positioned in the world, including absolute and relative location. Places and regions study the physical and human features of the place being studied from climate to language to religion to government.
<u><em>Places and regions
</em></u><u><em>: </em></u>A place in space that is different from other spaces. Regions are areas defined by unifying physical and /or human characteristics. A region is a space that shares one or more qualities or characteristics & a basic unit of study in geography.
<u><em>Physical systems:</em></u><em> </em>In physics, a physical system is a portion of the physical universe chosen for analysis. Everything outside the system is known as the environment. The environment is ignored except for its effects on the system.
<u><em>Human systems: </em></u>Movement is how things move from place to place. (This can be movement of people, ideas and/or beliefs, and goods.) and describes how people have shaped our world.
<u><em>Environment and Society: </em></u>The Environment and Society specialization within the Geography major provides students with an understanding of the reciprocal relationships between social and environmental processes. Environmental geographers are concerned with how human beings use the earth and how humans impact the environments in which they live.
<u><em>Uses Of Geography: </em></u> The uses of geography is the study of the practical side of the subject. It concerns understanding how to apply geography to explain the past and help us make decisions today.
Answer:
They found evidence of an impact crater in Mexico
Explanation:
The K-Pg boundary is the boundary that separates two periods, but also two eras. The two periods that are separated by this boundary are the Cretaceous and the Tertiary, while the two eras are the Mesozoic and the Cenozoic. The boundary is marked by a mass extinction, and the scientists started to hypothesize as to why it happened. There were numerous different theories, but a clue in Mexico, or rather right next to the Yucatan Peninsula, shed new light on it. The scientists found an impact crater, formed either by a large asteroid or a comet. Such an impact would have easily caused sudden and drastic changes on the Earth, killing of the majority of the species. This impact released such a big amount of energy that it killed everything in the surrounding area in seconds. On top of that, it caused an extremely hot wave of air across the whole planet, killing many more organisms. It managed to trigger most of the volcanoes to erupt, as well as the earthquakes, causing also very large tsunamis. The sunlight got blocked for quite some time from all the aerosols in the atmosphere as well. This resulted in a mass extinction of the dominant species, like the dinosaurs, but it opened up the terrain for the evolution of the others, like the mammals.
Mountain effect refers to the windward side of the mountain receiving precipitation. It is also the effect of rough terrain on radio-wave propagation. Thus, it caused reflections that produce errors in radio direction-finder indications.
