Hello!
The answer is a).
Mining generates (in 2014) just $44.7 billion.
HugS!
The stratosphere contains the highest concentration of ozone
Answer:
1. If developed due to the practice of farming, cultivation of the soil for the growing of crops. Similarly, individuals have learned how to use animal to provide food, wool, and other necessities.
2. Obviously, the practice of agriculture is essential in sustaining human life. However, these practices often leave negative impact on the environment. The most prominent of these effects includes climate change, deforestation, pollution, and other unfortunate events.
3. This is due to the fact that different areas harvest different crops, evidently leading to various different foods.
4. Agriculture differs in those regions for developing ones evidently don't have as much experience as those that are already established. It will take a deal of time for them to develop similar foods as the other already developed regions.
5 + 6 Don't know.
Answer:
<em>Exoplanets are planets that are out of the solar system. The first possible evidence of an exoplanet was noted in 1917, but was not recognized as such. The first confirmation of detection occurred in 1992. </em>
I’m not 100% sure this is right but I am almost positive.
