thefirsttimebymyself,whichbroughttomean amazing feeling I?ve never experienced———but sill,Icouldn?timagineevertellinganyonethe truth.SoIdidn?t.Itwasn?tuntilmidwaythrough collegethatIcameclean.Itturnedoutplentyof mycollegefriendshadfailedtoo! AndIgathered enoughcouragetospeakthefactout.Yes,Ihad alsof...
they got their own kingdom— a kingdom of very tiny things without nuclei.So then we had separate kingdoms for plants, and for animals. And the different kinds of fungus, like mushrooms. And for these tiny bacteria.But we also had some other micro-organisms that didn’t fit anywhere.So...
What organelles are cellular structures were common to all the different organisms looked at with the microscope? Which of the following is a prokaryotic cell? a. plant cell b. liver cell c. muscle cell d. paramecium e. bacterium Describe how some ce...
所以地球真的是独一无二的吗？地球上所有的生物都有着相同的组成成分，即长碳基分子。Scientists now think that a large proportion of these molecules came from outside planet Earth. Comets and asteroids could be the missing links of a long chain.科学家们现在认为，这些分子中有很大一部分来自地球以外...
Some marine protozoans (single-celled organisms), called foraminifera, have shells that tell the temperature of the water where the animal lived. By studying the chemical make-up of these tiny fossils, the temperatures of prehistoric seas can be found, and changes in the ocean temperature can ...
Which came first, the coral adult or the coral egg? Then there are the organisms that form embryo-like stages by fusing individuals. Such as fungi. Such as slime molds. Which came first? The amoebic stage slime mold (asexual reproduction of protozoa-like cells), the slug stage slime ...
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Beyond these similarities, though, what's really fascinating about mineral evolution is the way minerals apparently coevolve with living organisms. Uh, what do I mean by that? Well, it's maybe a billion years after Earth’s formation that we first see evidence of life. ...
The great philosopher Aristotle is generally considered the first person to systematically categorize things. He divided all living things into two groups. They were either animal or vegetable. And these categories are what biologists came to call "kingdoms". ...
However, what came as a surprise to ocean researchers was the finding that dead whales support entire ecosystems. In 1998, researchers at the University of Hawaii discovered that at least 12,490 individual organisms representing more than 43 species were living off of a whale fall in the deep ...