<span>Oil is less dense than water so it floats, that is also why you have to shake real well any oil- based salad dressings (Italian and vinegarettes) before using.</span>
You can conclude that Florida lacks in bedrock because sinkholes form where there is low amount of such.
Answer: A. Beyond
Explanation:
The prefix extra in this contest means beyond. That means that a beyond solar planet is outside solar and something that is beyond terrestrial which means something outside of Earth.
B, C, and D are incorrect answers because they are not fitting into the context of the sentence.
Because of cultural reasons
The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
