2=ArizonaGrand Canyon is in the northwest corner of Arizona, close to the borders of Utah and Nevada.
Answer:
b)-2.4% year
Explanation:
The population growth can be calculated by the following equation.
![P(t) = P(0)e^{rt}](https://tex.z-dn.net/?f=P%28t%29%20%3D%20P%280%29e%5E%7Brt%7D)
In which
is the population in t years from now,
is the population in the current year and r(decimal) is the growth rate.
is the Euler number.
The current population of South Korea is 50 million, so ![P(0) = 50,000,000](https://tex.z-dn.net/?f=P%280%29%20%3D%2050%2C000%2C000)
2750 is 2750 - 2019 is 731 years from now. So we have that
. The population is going to be extinct, so
.
So, we can replace the values of
and t in the equation, and see for which growth rate
.
a) 0.012 % year
This is a positive growth rate, which means that the population will not be going extinct. So this is not the alternative
b)-2.4% year
![r = -0.024](https://tex.z-dn.net/?f=r%20%3D%20-0.024)
![P(t) = P(0)e^{rt}](https://tex.z-dn.net/?f=P%28t%29%20%3D%20P%280%29e%5E%7Brt%7D)
![P(731) = 50,000,000e^{-0.024*731} = 1.20](https://tex.z-dn.net/?f=P%28731%29%20%3D%2050%2C000%2C000e%5E%7B-0.024%2A731%7D%20%3D%201.20)
Population of 1 person, basically extinct. This is the correct answer
c)-0.01% year'
![r = -0.001](https://tex.z-dn.net/?f=r%20%3D%20-0.001)
![P(t) = P(0)e^{rt}](https://tex.z-dn.net/?f=P%28t%29%20%3D%20P%280%29e%5E%7Brt%7D)
![P(731) = 50,000,000e^{-0.001*731} = 24,071,366](https://tex.z-dn.net/?f=P%28731%29%20%3D%2050%2C000%2C000e%5E%7B-0.001%2A731%7D%20%3D%2024%2C071%2C366)
Population still at 24 million, it does not goes extinct.
d)-0.012% year
![r = -0.0012](https://tex.z-dn.net/?f=r%20%3D%20-0.0012)
![P(t) = P(0)e^{rt}](https://tex.z-dn.net/?f=P%28t%29%20%3D%20P%280%29e%5E%7Brt%7D)
![P(731) = 50,000,000e^{-0.0012*731} = 20,797,296](https://tex.z-dn.net/?f=P%28731%29%20%3D%2050%2C000%2C000e%5E%7B-0.0012%2A731%7D%20%3D%2020%2C797%2C296)
Population still at almost 21 million, it does not goes extinct.
D seismic waves refract or bend to bounce off differently according to the object or material you have
The correct answer is A. An ecological footprint
Explanation:
The term "ecological footprint" is used to refer to all the natural resources including land, water, minerals, and others a person or a population demand according to their needs and lifestyle. Additionally, ecological footprint also measures the ecological impact or the resources and land necessary to assimilate the waste of people. This implies, the ecological footprint measures the impact of people on the environment as well as the dependence relationship on nature as all individuals need natural sources and also produce waste or support contamination. According to this, the land needed to provide sources and assimilate waste of people refers to the ecological footprint.