It was during the Paleozoic Era that plants (first known from microfossils called cryptospores that appear in the mid-Ordovician, about 470 million years ago; Wellman and Gray 2000) and animals (known from Silurian fossils, at least 423 million years ago; Wilson and Anderson 2004) began to colonize the land
It would be completely false to say that both internal and external environments can modify or alter a gene. The correct option among the two options that are given in the question is the second option or the last option. I hope that this answer has come to your great help.
Weather is short term like a storm or snow. Climate is permanent. Like how a states climate is. Take an example Florida is warm that’s climate.
The resonant frequencies of air columns<span> depend upon the speed of sound in </span>air<span> as well as the length and geometry of the </span>air column<span>. Longitudinal pressure waves reflect from either closed or open ends to set up standing wave patterns</span>
I think it's the first one. DNA ligase<span> specifically repairs double-strand breaks. hope this helps, have an amazing day :)</span>
