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3 years ago

What causes the stratosphere to be warmer than layers just above or below it?

Biology

1 answer:

Maslowich3 years ago

3 0

Answer: A.solar energy absorption by the ozone layer

The stratosphere is the almost top layer of the earth atmosphere, occupying the second position. It is found above the troposphere and below the mesosphere. It is occupied with layer of ozone which absorbs the UV radiations coming from the sun.This makes the layer warmer as compared to other layers.

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Why do ruminants digest their food in 2 steps

Rus_ich [418]

Answer:

Due to half way digestion the food matter becomes softer than earlier and the animal can chew it well.

Explanation:

6 0

3 years ago

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2.Which of the following represents a genetic cross between 2 individuals that are each heterozygous for both traits?

wariber [46]

Answer:

A. AaBb x AaBb

Explanation:

The term heterozygous refers to the presence of two different alleles of same gene in an organism. The one allele can be of wild type (original type) and one can be mutated or newly formed.

In the question, two traits are represented by two letters, A and B and alleles as A and a and B and b, respectively. We are asked about a cross involving two traits and two individuals in such a way that both are heterozygous.

If we look at option A, AaBb x AaBb,

we see that one trait A and the other trait B is in heterozygous form (Aa and Bb) in both individuals.

If we look at option B. AABB x AABB

we see that one trait A and the other trait B is in homozygous form form (AA and BB) in both individuals. Homozygous means when the alleles are same for each trait in an individual.

If we look at option C,Aa x Bb

There are not two traits, one trait of one individual and other trait of other individual is being crossed that is not possible.

If we look at option D. AAaa x BBbb

Again, the individuals are homozygous for two traits.

Therefore, A is best option.

Hope it helps!

7 0

3 years ago

What statement BEST describes sound? A) It's a form of work. B) It's a type of force. C) It's a form of energy. D) It's a type o

RSB [31]

A) It's a form of work.

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3 years ago

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Which action would most likely increase the greenhouse effect?

natta225 [31]

Answer:

D. Burn more oil for heating homes

Explanation:

Encouraging people to conserve power would help weaken the greenhouse effect, not increase it. Stopping cutting down the trees in the Amazon forest would also heavily help weaken the greenhouse and not increase it. And unlike the others, using more nuclear power plants wont affect the greenhouse atfect but instead affect our air quality. Our problem is that burning coal, oil, and gas produces carbon dioxide, which adds to the supply already in the atmosphere, increasing the greenhouse effect and thereby increasing the temperature of the Earth so therefore its D.

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3 years ago

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Prescribe how mountains change in abiotic conditions with an increase in elevations

olga55 [171]

The first famous natural scientist to determine how plants change with altitude on tall mountains was Alexander Von Humboldt and Aime Bonpland when climbing some very high volcanoes in South America like Chimborazo at well ove 20,000 feet high and they observed that different plants grow at different altitudes as altitude increases so that as the mountain was ascended the new environments of temperature, moisture,etc would become abiotic for the lower plants but acceptable for the higher elevation plants. In these cases in South America, the lower elevations had very warm temperatures and high humidity so would grow tropical plants with probably large leaves like palm trees etc. On the other hand at high elevations the temperature would be significantly decreased and probably humidity decreased too so only rugged plants like say lichens could grow. At intermediate elevations, most likely say pine trees could grow as I know they do at moderate elevations in Honduras for example.

5 0

3 years ago