Answer:
Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.
Explanation:
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The esophagus is a muscular<span> tube connecting the throat (</span>pharynx<span>) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called </span>mucosa. The esophagus runs behind the windpipe (trachea<span>) and heart, and in front of the spine.
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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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Answer:Inducible;inducer
Explanation:
Induction is the phenomenon of increased synthesis of protein or and enzyme in response to certain signal. Such enzymes are called inducible and the signals are called inducer. Induction is turning ''on''the switch of a gene.
When M is present in the medium, M binds the repressor protein. The repressor-M complex is inactive which does not bind to the operator region of LM. Now RNAP can transcribe the structural genes of LM.
M switches the gene ''on''. Hence M is an inducer of LM. LM is an inducible operon