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.
PRO gress,,PRE conceived, PRE cede, POST mortem(?), POST script, PRE amble ... perhaps ?
Answer:
I don’t know what I was doing
Explanation:
To shirk means to avoid doing something.
So, if there are any choices, I'd choose that someone would be tempted to shirk a difficult task, or something you just don't feel like doing.
<span>Words of Anglo-Saxon origin make up 50 % of the total number of words in the English vocabulary.
In short, the answer would be C) 50.
Hope this helps !
Photon</span>
