The correct answers are:
- increased greenhouse gases;
The transportation system is one of the biggest emitters of greenhouse gases into the atmosphere, and this is due to the combustion of the fossil fuels, the end result being huge amounts of CO2 released in the air.
- increased pollution;
The energy sources used for the transportation systems are in general very damaging for the environment as they are letting out as a side product lots of pollutants.
- Easy movement of people, products, and ideas;
With the development of the transportation systems, the movement around the globe has become very easy and quick, and that has contributed to constant communication between people from all over the world, exchanging goods, ideas, technologies, as well as migration.
<span>paint a picture in the reader's mind.</span>
Answer:
On subduction zones
Explanation:
Explosives volcanoes are most likely to be found on subduction plate boundaries where one plate subducts (goes under) another plate. The subducting plate is usually a plate made of denser oceanic crust and the upper plate usually consists of less dense continental crust. Because of the composition of the magma and the high silica content found in the continental crust, these eruptions are much more explosive than the gentler basaltic flows characteristics of oceanic hotspot eruptions or undersea divergent plate boundaries.
Answer:
b. Bacteria photosynthesizing dissolved carbon dioxide in oceans
Explanation:
The levels of oxygen that we know nowadays in the atmosphere have not been like this in the more distant past. In order for the oxygen to start building up and change the composition of the atmosphere, something needed to happen, and that something was the cyanobaceteria. The cyanobacteria was able to perform photosynthesis, so it started to use the dissolved carbon for it, while in meantime it was releasing oxygen in the atmosphere. As the cynaobacteria was growing in numbers, over the course of millions of years, it managed to propel enough oxygen in the atmosphere so that the other organism can start developing, thus changing the world forever.
