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3 years ago

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo?

Biology

1 answer:

Vesnalui [34]3 years ago

4 0

B. Ice-albedo feedback

Explanation:

The ice-albedo feedback is one process that can significantly increase the rate of greenhouse emissions in response to a decreased albedo.

Albedo is the ratio of reflected light to incident light.

A decrease in albedo suggests that a surface is absorbing more light than it is reflecting. This is typical of areas with land cover and vegetation.

Areas with a high reflectivity have a high albedo. Snow, ice and polar regions are good reflectors of solar radiation. They have a very high albedo close to 100%. Much of the surface area is buried with ice.

Examples of greenhouse gases are carbon dioxide, methane, water vapor e.t.c

How does a low albedo relates to increase in greenhouse gas emission?

The ice-albedo feedback can substantially contribute to greenhouse gas emission.
The high reflectivity of ice causes long wave radiation to warm the air around a icy body in polar regions.
When ice melts, they leave land bare and exposed.
Melt water collects in pockets.
Exposed land leads to a decrease in albedo.
Organisms can thrive more in warm terrain.
Also, pockets of carbon dioxide gases trapped in ice is released.
Organisms release carbon dioxide into the atmosphere during cellular respiration.
Soils originally permafrost will become stable and this will encourage more human occupation of the area.
All these activities leads to an increase in the emission of greenhouse gases in an area with low albedo.

Learn more:

Greenhouse emission brainly.com/question/4580761

#learnwithBrainly

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In pea plants, purple flowers are dominant to white flowers, and the purple and white alleles are represented with P and p, resp

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Answer: 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.

Explanation:

Heterozygous means that its genotype has two distinct alleles, i.e. a dominant and a recessive one. So the genotype of the plants is Pp, and each plant has two alleles since they are diploid organisms, which have two copies of each gene.

Each plant produces gametes, which are haploids cells. That is, they only have one copy of each gene (one allele). So, the gametes produced by Pp have a P or p genotype. During fertilization, the maternal and paternal gamete are fused to form a diploid zygote where their genotype will have one allele from the father and one from the mother.

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In the offspring, we see one PP genotype (homozygous dominant), two Pp genotypes (heterozygous) and one pp genotype (homozygous recessive). Since we know the P allele is dominant and it codes for purple color, a genotype only needs one P allele to express that phenotype. So Pp and PP organisms are purple, and only pp is white. That means 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.

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