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jok3333 [9.3K]
3 years ago
14

is Earth an open system or closed system? Explain your answer and provide at least one example that occurred during the Precambr

ian era
Biology
1 answer:
Ivan3 years ago
3 0

Answer:

The Earth is essentially a closed system; it obtains lots of energy from the Sun but the exchange of matter with the outside is almost zero. Isolated systems can exchange neither energy nor matter with an outside system.

The Precambrian was originally defined as the era that predated the emergence of life in the Cambrian Period. It is now known, however, that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time.

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What are some benefits of genetically engi-<br> neered crops?
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Answer:

More nutritious food.

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Increased supply of food with reduced cost and longer shelf life.

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Explanation:

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3 years ago
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in chickens, the allele for black feathers is co-dominant with the allele for white feathers. black-feathered and white-feathere
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In chickens, the black wing allele is co-dominant with the white wing allele. Black and white birds are homozygous for the black (B) allele or the white (W) allele.

In genetics the terms, codominance refers to the pattern of inheritance in which the two versions (alleles) of the same gene are being expressed separately to produce the different traits in the individual. In perfect dominance, only the one allele of the genotype is also present in the phenotype. In codominant cases, both the alleles of the genotype are present in the phenotype. In the case of the imperfect dominance, the phenotype shows the mixture of genotypic alleles. In the genetics terms, codominance refers to the pattern of inheritance in which the two versions (alleles) of the same gene are expressed and separately to produce the different traits in the individual.

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8 0
1 year ago
DNA that contains information from two different species is knows as
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8 0
3 years ago
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