It is what makes plant stems, leaves, and branches so strong.
The correct option here would be A. Evolution has to do with species changing over time while natural selection is a process that leads to evolution.
<h3>Evolution and natural selection</h3>
Evolution refers to the gradual changes to the morphological and or physiological characteristics of living organisms over time as a result of constantly trying to adjust to their environments.
Natural selection, on the other hand, refers to one of the processes through which evolution takes place. It refers to forces that select for or against traits in organisms.
More on evolution and natural selection can be found here: brainly.com/question/2725702
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Answer:
A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy is or is not allowed.
<span>Mag sulfate is an electrolyte that is used as an adjunct to treat acute nephritis. It also is used to treat seizures and severe toxemia. Calcium glubionate, potassium chloride, and sodium lactate aren't therapeutic in acute nephritis and, in fact, may worsen the condition.</span>
