Answer:
The answer is C)
Explanation:
The predators were unable to keep the population of the mussels down. The mussels took more area of the rock. Other species that needed space did not return to the tidal pool. Otters can also be keystone species as they eat urchins. By doing so, they prevent the sea urchins form eating all the kelp plants and removing the entire habitat for many other species. The Keystone Species theory shows that this impact of few predators, that made up a minor amount of the total species, could have such a high impact on the ecosystem.
When something happens, energy is changed from one form into another. When you climb stairs, chemical energy in your food is changed into kinetic energy by your muscles, and into potential energy as you raise your body against gravity. The amount of energy transferred is measured in JOULES.
Answer:
Correct answer is A. The Middle East
Explanation:
There are 14 members of OPEC and most of them located in Middle East, including United Arab Emirates and Libya. Qatar was member until 2018.
None of the countries from Europe are members of this organization.
The same thing is with Central Asia, while from South Africa we only have Angola.
It is interesting that some of the largest petroleum exporting countries are not members of this organization.
D.) Cultural diffusion
Define<em> diffusion</em><em>:</em>
<em>The process of spread of a feature or trend from one place to another over time.</em>
The production of crops and farm animals for sale, usually with the use of modern technology: commercial farming methods.
