"Essay on MY best teacher" We do not know your teachers and you did not provide any valid information on them, nobody can help without more data and you should be doing this alone because we dont know them.
Answer:
Explanation:
More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant. At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions.
Though mass extinctions are deadly events, they open up the planet for new forms of life to emerge. The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and birds to rapidly diversify and evolve.
Some of my personal struggles is that i am personally (at my school) not able to communicate, sit near, or be anywhere close to anyone. this means no group work, unless done virtually, which is hard as well. working with others is great for my communication skills and working well with others, which i am unable to do due to the ongoing coronavirus pandemic.
hope this helps you!
xoxo
