<span>THE ANSWER IS MID-OCEAN RIDGES!!!</span>
Answer:
A. illustrating percentages
Explanation:
From the given choices the true statement is Surface winds blow parallel to isobars.
Answer: Option B
<u>Explanation:</u>
The winds which flow near the isobars, flow in the parallel direction of the isobars. They are not absolutely parallel to each other but are this much parallel that the purpose of the flight planning can be fulfilled with this.
These winds flow in perpendicular position to isobars which are present at that particular surface and they flow in this direction due to the acting of the force of friction in that area. This force of friction can also change the direction and the flow of the wind.
The correct answer is A. Rocks are broken into smaller pieces.
Explanation:
In geography, the term weathering is used to refer to the process in which rocks and others such as soil or mineral break into smaller pieces. This can occur due to chemical agents or due to physical factors. Physical weathering includes factors such as temperature, physical contact or pressure that make rocks and other materials break in smaller pieces without changing the general properties or composition of the material. Additionally, these pieces along with other materials form the soil. According to this, the change that takes place during physical weathering is "Rocks are broken into smaller pieces".
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.
