We found no evidence of saturation (Additional file 1: Figure S3). Nevertheless, since changes in substitution biases can result in systematic error [55], and this is more likely to affect synonymous substitutions, we repeated the BEAST analysis using only 1st and 2nd codon positions of coding...
It seems possible that the origin of life on the Earth's surface could have been first prevented byan enormous flux of impacting comets and asteroids, then a much less intense rain of comets may have deposited the very materials that allowed life to form some 3.5 - 3.8 billion years ago. ...
the day-to-day life was the same: lame and mundane. So, on the fourth day, I was happy for something different when a wound specialist nurse came in to examine me for bed sores. She found several hotspots where bed sores began forming, so she ordered an air bed delivered that day....
In 2013, scientists found that coelacanths are not the closest relative of four-footed amphibians and other animals. Which species is? Besides apes, monkeys, or primates of any kind, which animal species alive today is the closest relative of the human being?
Another type of bird that has become extint is the dodo. The dodo lived on an island called Mauritius in the Indian Ocean. It had short stubby legs and wings and a large curved beak. The dodo was about the size of a large turkey. It was acturally related to the pigeon but it ...
On the other hand, the notion of the superiority of modern life over ancient (both biological and cultural) is bound to annoy other kinds of people, although the full treatment of the matter is to be found elsewhere. My first exposure to the big picture of life was in The Wellsprings ...
I found looking at these boughs soothing. My pain dissolved. I relaxed completely. Such a great feeling…at least for a time! I can’t thank my family enough for making it possible for me to get back to this lake and this campground. I’m an old man now. Many of the things we ...
If walking away with more questions than answers was the takeaway, then perhaps we found what we had put forth. Where did it go? Nowhere and everywhere. That was the point. Here’s the visual summary: It was the penumbra between the comfort of logic and the messiness of the creative ...
and is very similar to the situation I found myself in over five years ago now. I won’t get too heady on the specifics as that would be a disservice to him, his soon-to-be ex, myself and my own ex whom I truly consider both a co-parent and a friend. For me, what is pass...
小题1:细节题:从文章的句子:A type of bird that is now extinct (消失) is the passenger pigeon. Another type of bird that has become extint is the dodo., Another flightless bird that has become extinct is the moa.可知提到三种灭绝的鸽子。Three.小题1:细节题:从第二段的句子:Settlers who ...