Primary succession is a process of forming ecosystems in an area that has never been inhabited before. Since living organisms are necessary for forming the soil, which is a foundation of every land ecosystem, at the point before the soil formation or pedogenesis has occurred the ecosystem provides very few habitats.
<span> A decrease in lung volume decreases the pressure within the lungs so air can flow inside. </span>
Answer:
irreversible chemical change
Explanation:
A chemical change always results in a new substance and as it is not possible to reverse it, it is an irreversible chemical change.
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Answer:
Even in pure water ions tend to form due to random processes (producing some H+ and OH- ions). The amount of H+ that is made in pure water is about equal to a pH of 7. That's why 7 is neutral. ... In pure water near room temperature, the concentration of H+ is about 10-7 moles/liter, which gives a pH of 7.