Answer: D
They often occur spontaneously, because when energy is released during a chemical reaction it does not usually happen slowly.
Answer:
Dark beetles were more camouflaged to their new environment and were able to survive longer in order to reproduce.
Explanation:
The key here is "A lot of the brush has been burned away and the ground in the ecosystem is much darker in color due to the fire."
Nutrients move through<span> the </span>ecosystem<span> in biogeochemical cycles. A biogeochemical cycle is a circuit/pathway by which a chemical element </span>moves through<span> the </span>biotic<span> and the </span>abiotic factors of an ecosystem. It is inclusive of thebiotic factors<span>, or living organisms, rocks, air, water, and chemicals.</span>
Answer:
A measure of the nutrients a food provides relative to the energy it provides; the more nutrients and the fewer kcalories, the higher the <u><em>nutrient density</em></u>.
Nutrient density identifies the amount of beneficial nutrients in a food product in proportion to e.g. energy content, weight or amount of detrimental nutrients. Terms such as nutrient rich and micronutrient dense refer to similar properties. Several different national and international standards have been developed and are in use
Recessive traits often seem to disappear because two recessive alleles are needed to produce the recessive phenotype. They can skip a generation and then reappear if an individual inherits two copies of the recessive gene. Mendel's experiments revealed that phenotypes could be hidden in one generation, only to reemerge in subsequent generations.
Recessive traits disappear because recessive alleles can hide out in heterozygotes, allowing them to persist in gene pools and natural selection can only see the phenotype, not the genotype. While harmful recessive alleles will be selected against and it's almost impossible for recessive alleles to completely disappear from a gene pool.
To learn more about recessive alleles, here
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