The answer is D, The structure was probably functional in some ancestor of the modern organism. Vestigial structures are structures that have remained from ancestors but have no function in modern times.
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The answer is a low-density particle
A <u>desert</u> receives less than 10 inches, or 25 centimeters, of precipitation a year.
The utility<span> approach </span>helps explain the law of demand<span>. In fact, the </span>demand<span> curve for a normal good is downward sloping due to the </span>law<span> of </span>diminishing marginal utility<span>.</span>
Answer:
Speciation occurs at terminal population groups
Explanation:
A ring species represents a group of organism that has moved beyond a geographic barrier to produce a ring shaped distribution. This population is contiguous and there exists no barrier to gene flow anywhere in the ring except at the terminal populations.
Speciation is demonstrated in the terminal population has become sympatric and it does not interbreed even if they are connected by chain of intergrading or interbreeding populations
