Minerals
Explanation:
Minerals can be found in the cactus and ground and are very resourceful
The surface area of a sphere can be approximated as follows: Surface area = 4πr2; where r is the radius of the sphere; π is a constant that is roughly equal to 3.
Explanation:
The large fish will most likely eat most of the white fish, and there will only be gray fish left. Since the large fish can't see the gray fish well, they catch some but quickly starve because of the lack of white fish. In the end, only gray fish are left.
I believe the answer to this question is a food web.
Food Web definition: "<span>a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community."
Source: </span>http://www.dictionary.com/browse/food-web
