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.
The correct option is C.
Plate tectonic theory explains the structure of the earth's crust and the many phenomena that are associated with it. This theory enables the scientists to know that there are movements in the interior of the earth which are responsible for volcanic eruptions and earthquakes.
Answer:
adaptation
Explanation:
The exact definition of adaptation is :
the process of change by which an organism or species becomes better suited to its environment.
This is basically what the question says and I therefore believe this is the answer
Hope this helped and have a good day
Answer:
1.Plant native and/or drought-tolerant grasses, ground covers, shrubs and trees. They don't need water as frequently and usually will survive a dry period without watering.
2.Install water efficient irrigation devices, such as micro and drip irrigation and soaker hoses.
3.Use mulch to retain moisture in the soil.
The correct answer of the given question above would be the second option. The climate zone that is often found closest to the equator, experiences warm to hot weather all year, and has no dry season is the t<span>ropical humid climate zone. Hope this answers your question.</span>
