They form in the ocean where undersea volcanoes are errupting. The magma turning into lava piles up on top of itself over lots of time to form land.
I’m pretty sure you just add AB to BC, since they are all points on a line, those two segments add together to get the value of AC. Therefore, 12+16= 28, so AC=28
Asia is located north of the equator. East is the direction that Asia is located from the Prime Meridian. Asia is located in both the northern and eastern hemispheres.
Answer:
Iron oxides appeared after the emergence of cyanobacteria.
Explanation:
The composition of Earth's atmosphere in the first couple of billions of years of its existence was nothing like the atmosphere of today. This had a big influence on the processes that were taking place, or rather what processes and to what extent could have happened in those conditions. One big difference between the atmosphere then and after is the levels of oxygen.
Until the appearance of cyanobacteria, the oxygen levels in Earth's atmosphere were very low, and the same goes for the oceans. With a lack of oxygen, the process of oxidation was absent as well. The cyanobacteria though managed to produce oxygen, and this was on such a high scale that they changed the composition of Earth's atmosphere and the oceans. Not just that this enabled complex lifeforms to develop, but it also enabled the process of oxidation. Iron oxides for example occurred only after cyanobacteria appeared, and this can easily be seen when dating the oldest iron oxides and compare that age with the appearance of cyanobacteria.
Answer:
The statement is false.
Explanation:
Migration is a process that has been ever-present among humans since their earliest days and has persisted to modern times. The basic reasons for migration are the same both in the past and nowadays, though as time has progressed, there have been more and more reasons for it. Migration can be divided into immigration and emigration.
Immigration is a process when people move into another place/country, while emigration is a process when people move out from a place/country. The immigration process is most prevalent in high-income countries as they offer the best living conditions, so they are the most attractive. The low-income countries have large-scale emigration and little to no immigration because the living conditions are not good.
