First order of business today was Marine Biology. I learned about estuaries, which to summarize, are partially enclosed coastal embayments where freshwater rivers meet with the sea. Because of the mix of fresh and salt water, some unique ecosystems are created.
There are other things that contribute to the ecosystem of an estuary. Because water flow can change due to things like rainfall and tides, estuaries are variable habitats that are mainly inhabited by species that can deal with change. Another thing involved with the water patterns is that certain things tends to get trapped in estuaries. So while that’s good if nutrients get trapped, it’s really bad if pollutants get trapped.
Next up, Economics! I learned about absolute and comparative advantage, and some trade. So, what is absolute advantage? Absolute advantage is when a country can produce more of a product than another country. For example, take two hypothetical countries which are exactly the same except for climate and soil fertility. Say that they both compete to grow more of a certain crop, cashews for example, and country A is able to produce more. It has absolute advantage in terms of cashew production.
There’s also comparative advantage, where a country is able to produce a product more efficiently, or with a lower opportunity cost than another country. So, take country B. It can’t produce cashews on the same level as country A, but they can produce them more efficiently. It would be better for both countries to trade in that case, since country A can produce other things and trade with B for cashews, which they can produce while also producing other things.