Answer:
The population of sub-Sahara Africa has grown from 186 million to 856 million people from 1950-2010. That’s about 11 million people a year for the past 60 years or approximately 670 million people in 60 years. By 2060, the population of sub-Sahara Africa could be as large as 2.7 billion people.
The sun and the planets formed together 4,6 billion years ago from clouds of gas and dust called the solar nebula
Answer: a. algal bloom
Explanation:
The availability of food in the systems can tell the types and numbers of organisms in the systems by checking which types of organisms eat the food available as well as the quantity available to see the number of organisms.
Temperature and dissolved oxygen levels also play a huge part in determining the feasibility of organisms staying in the system. The availability of nutrients goes hand in hand with the availability of food in determining the organisms present.
Algal bloom is not a factor in determining the types and numbers of organisms found in a system because the conditions that caused this bloom might not be suitable for other organisms as well.
<span>Platinum can be found in: Chromite bands
Chromite could be easily found in ultramafic layer of intrusive rocks and it contain several similar components as those that we could found in magma.
The black bands part of the chromite also carries several substance from platinum group metals.</span>
<span>The topography of the Midwest is relatively flat</span><span>
Topography is the shape or configuration of the land, its physical features represented on a map by contour lines, hypsometric tints, and relief shading.
Hope this helped.</span>
