Hundreds of plants, fungi, and animals can do it. Now scientists think bioluminescence may have evolved 540 million years ago in Earth’s ancient oceans.
When is the best time to study amphibians? How did amphibians evolve? When did the first vascular plants appear? How are young amphibians born? What period was known as the age of amphibians? Are all amphibians born in water? Where is the biggest decline in amphibians?
How did heterospory evolve? The evolution of bimodal size distributions withsmall male sporesand large female spores, known as heterospory, was an innovation that occurred repeatedly in the history of land plants. ... With the advent of such microspores, megaspores would evolve under frequency-...
When did seed-bearing plants evolve? What did humans evolve from? How does the formation of a new species occur? Does evolution occur in individuals or populations? How does evolution occur according to punctuated equilibrium? When does the exponential growth of a population stop? When did Lamarc...
”中的how antibiotic-resistant bacteria evolve and make their way to humans可知,Jo Handelsman 的研究重点是耐抗生素细菌是如何传播到人类的。故选C项。【小题2】细节理解题。根据第三段“The researchers unexpectedly found that there were more soil bacteria carrying antibiotic-resistant genes when they ...
When did insects and amphibians first appear? Zoology: Insects all belong to the taxonomic class Insecta. Some common types of insects are: ants, bees, wasps, mosquitoes, termites, grasshoppers, locusts, roaches, cicadas, and beetles. Answer and Explanation:1 ...
Why did the basilosaurus evolve? Basilosaurus shows the link or intermediate between whales and their terrestrial ungulate ancestors. The theory is that someland-living ungulates favoured munching on plants at the water's edgewhich had the added advantage of allowing them to easily hide from danger ...
If the interpretation of the fossils is correct, then life has existed for 3.5 billion years, and if these divergence estimates are correct then we must explain the more ancient evidences of life on this planet. If the first divergence only occurred about 2 billion years ago, then we must ...
Eventually, something worked, though no one was really sure what it was that did the trick. Or even if the flare just subsided on its own. Leaving the hospital, I was instructed to slowly wean myself off of the steroids. I followed their directions, but each time I tried to taper off...
These findings support the "defense de-escalation" hypothesis, which posits that organisms will evolve to stop using precious resources on defense mechanisms if they're not working anymore. One benefit of defense de-escalation is potentially diverting resources to defenses that do work. ...