Monogamous pine voles and polygynous montane voles are different in terms of the parental care.
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Monogamous Pine voles vs Polygynous Montane voles ;</h3>
Monogamous Pine vole do extended biparental care, whereas Polygamous Montane voles do not form long-lasting pair bonds and they engage in extended biparental care.
Monogamous species has the prairie vole, vasopressin facilitates affiliation, pair-bonding, and paternal care.
Polygamous Montane vole's vasopressin fails to influence social behavior.
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In geology, a key bed (syn marker bed) is a relatively thin layer of sedimentary
rock that is readily recognized on the basis of either its distinct
physical characteristics or fossil content and can be mapped over a very
large geographic area.[1]
As a result, a key bed is useful for correlating sequences of
sedimentary rocks over a large area. Typically, key beds were created as
the result of either instantaneous events or (geologically speaking)
very short episodes of the widespread deposition of a specific types of sediment. As the result, key beds often can be used for both mapping and correlating sedimentary rocks and dating them. Volcanic ash beds ( and bentonite beds) and impact spherule beds, and specific megaturbidites
are types of key beds created by instantaneous events. The widespread
accumulation of distinctive sediments over a geologically short period
of time have created key beds in the form of peat beds, coal beds, shell beds, marine bands, black in cyclothems, and oil shales. A well-known example of a key bed is the global layer of iridium-rich impact ejecta that marks the Cretaceous–Paleogene boundary (K–T boundary). Please let me know if it works.
Answer: true
Explanation:
Organisms within a population must compete for resources to survive. T: The least-equipped organisms may not survive. ... -A process by which an organisms better adapted to their environment tend to survive, reproduce, increase in number, and pass their traits to succeeding generations.
