Explanation:
The Earth is closest to the Sun every January, but it is the fact that the north pole of the Earth's axis is tilted away from the Sun at that time of year which causes it to be winter in the northern hemisphere. B. Given the effects of precession, will this still be the case in 13,000 years?
Pros:save time, less hassle and worry , and saves water. cons: takes A couple of days to finish , can get damaged fast , it cost too much
Answer:
D
Explanation:
kinetic energy is motion energy, all other choices are forms of potential energy since they are not moving.
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.
