the answer is D. it shows how the population changed because the shorter legged animals survived and continued the population while the long legged animals died away.
Natural selection occurs when there is variation within a species, inheritance of the variations, and a limit on resources. This leads to individuals with advantageous traits having a higher chance of survival and reproduction. The best example given was a population of mammals that evolved to have shorter legs due to a change in their habitat.
Natural selection is a crucial mechanism of evolution and it occurs when three conditions are present: variation within a species, inheritance of those variations, and a population limitation on resources consumed. This leads to a survival competition, where advantageous traits increase an individual's chances of survival and reproduction, thus passing these traits onto the offspring.
In the given options, the description that fits most closely with natural selection is: 'D. A population of mammals varies in the length of their legs, water levels rise and the habitat becomes swampy, the individuals with shorter legs are better able to swim to food, the population evolves to become shorter-legged'. This example demonstrates genetic variation (the different leg lengths), selection pressure (the change in habitat), and selection advantage (shorter legs being more suitable for the new conditions).
#SPJ3
b. reading the entire source first, circling key words
c. browsing the table of contents in a book-length source.
d.looking for language from your research questions in an index.
The correct answer is option B, reading the entire source first, circling key words
Reason -
Scanning through key words is a quick strategy for determining the relevance of a source because its easy to use CTRL+F command and scan the entire document for a key just through few clicks
The index content is also a representation of the summary of the text inside the book. There is high probability that an important key word is marked in the index and thus it is easy and quick to scan an index as the text is less. Similarly, looking in table of content is also a quick process.
But reading the entire book just to find a key word is usually a tedious task.
They move to opposite sides of the cell.
B
They become centrioles.
They condense.
D
They disappear.
Chromosomes condense during prophase
Answer:
the answer is 8%