The phrase "a rapid explanation" is correct and usable in written English.
It can be used when you want to describe an explanation that is quick or concise.
Example: "During the meeting, I provided a rapid explanation of the project's objectives to ensure everyone was on the same page."
Alternatives: "a quick overview" or "a brief clarification."
As if to illustrate the point, he embarks on a rapid and astonishingly detailed explanation of the painstaking lengths he'll go to perfect every single dish, that culminates in the assertion that 72C (161F) is the only temperature at which to cook a lemon tart.
Moreover, the physical effects of a species on its environment might be a complementary explanation for rapid radiation events in species through the creation of new habitat types.
In both cases, this would offer a novel explanation to rapid evolutionary adaptation of a population.
This may represent a valid explanation for rapid breakdown of the partial reproductive isolation obtained in the two first generations and the return to random mating between the two distinct morphs.
Recently the presence of the 'sixth base', 5-hydroxymethylcytosine (5 hmC), has provided a possible explanation for rapid active or passive cytosine demethylation.
We also use quantitative genetic theory to evaluate under what conditions domestication selection alone is a sufficient explanation for rapid fitness declines that have been observed by some studies.
As fast evolving SSE1 and SSZ1 are expressed at high levels, comparable with that of most canonical Hsp70s, low expression is not a likely explanation for rapid evolution (table 2; figs. 3 and 6).
This means that the average species life span for these taxa is not only very much older than the rapid-speciation explanation for them requires but is also considerably older than the one-million-year estimate for the extinction rate suggested above as a conservative benchmark.
The speech, titled "The Global Saving Glut and the U.S. Current Account Deficit," offered a novel explanation for the rapid rise of the U.S. trade deficit in the early 21st century.
