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3 years ago

Which one of these lifestyle factors has most contributed to climate change?

Biology

1 answer:

denpristay [2]3 years ago

7 0

Answer:

The correct answer is option A. "The need for transportation".

Explanation:

It is estimated that the need for transportation accounts for about 29 percent of total greenhouse emissions in the United States, which is estimated to be the largest contributor to climate change. Land and air transportation affect the environment by the production of long-lived carbon dioxide and short-lived black carbon.

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Which best describes independent assortment?

bekas [8.4K]

Answer:

In metaphase 1, chromosomes from the mother and father line up randomly along the middle of the cell.

Explanation:

In diploid (2n) organisms, the homologous chromosomes are the two copies of each chromosome, where one of these homologs is the chromosome from the mother, while the second one is from the father. During metaphase I, the homologous pairs of chromosomes pair together at the middle of the cell. The law of independent assortment, also known as or Mendel's Second Law, states that homologous chromosomes line up in random orientations at the metaphase plate during this period (metaphase I).

5 0

3 years ago

Read 2 more answers

Cystic fibrosis is an autosomal recessive disorder. In one population, the frequency of affected individuals (A 2 A 2) is 0.0004

Simora [160]

Hardy Weinberg Equilibrium

Explanation:

Hardy Weinberg Equilibrium formula for allelic frequency is: $p+q=1$

Hardy Weinberg Equilibrium formula for genotypic frequency is: $p^2+q^2+2pq=1$

Here, $p$ =frequency of dominant allele

$q$ =frequency of recessive allele

$p^2$ =frequency of dominant genotype

$q^2$ =frequency of recessive genotype

$2pq$ =frequency of heterozygous genotype

frequency of affected individuals=0.0004(given)

here,affected individuals means the one's having Cystic Fibrosis and since it is recessive disease so we can write frequency of recessive genotype as: $q^2$ =0.0004

If $q^2$ =0.0004 $q$ will be 0.02;frequency of recessive allele will be 0.02

Using the formula $p+q=1$

$p+0.02=1\\p=1-0.02=0.98$

hence,frequency of dominant allele will be 0.98

Frequency of dominant genotype will be $p^2=(0.98)^2=0.9604$
Frequency of heterozygous genotype will be $2pq=2*0.98*0.02=0.0392$

7 0

4 years ago

Carbon dioxide emissions are thought to contribute to global warming, and there is concern that changes in climate will be costl

Whitepunk [10]

The green house effect

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3 years ago

What helps maintain global oxygen concentrations in the troposphere?

olya-2409 [2.1K]

It was plants maintained photothenysis . global oxygen increase very important.but natural do it

6 0

3 years ago

WILL GIVE BRAINLIST!!! hypothesize TWO ways water pollution released from a factory into a small stream could travel through a w

klasskru [66]

Answer:

Two ways that the water pollution from a factory in the small stream could travel through a watershed are:

The polluted water will drain into the ground water and can travel further then, OR the polluted water can travel via watershed by leaking into the other streams, rivers, and oceans around it.

Explanation:

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3 years ago