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3 years ago

The connection between transportation and the environmental impacts of urban areas.

1 answer:

5 0

Mobile transportation, like: private cars, jeepneys and buses use energy and burn petroleum. During the combustion process, these mobile transports exhaust fumes that contain nitrous oxides, carbon dioxide and other particulates that pollutes the air and contributes to global warming.

As an additional information, China is considered as the country to produce most fossil fuel CO2 emission in 2015, followed by the United States.

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Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited

iVinArrow [24]

Answer:

B. Evolution

Explanation:

The change in allele frequencies from mostly light wings to dark wings has been commonly studied in evolution. It's a great example of natural selection favoring the more fit phenotype, in this case the dark that can blend in better with darker trees and darker, smoggy environment.

Why not competition: This doesn't have to do with limited resources.
Why not acquired: Lamarck's theory of acquired traits is defunct!! Don't fall for it!!
Why not overpopulation: This was not hinted at in the question.

6 0

3 years ago

Which statement is true about meiosis?

ziro4ka [17]

D, I believe

Meiosis produces gametes, each parent provides a gamete, containing half the number of require chromosomes. These combine to create a full set of chromosomes.

5 0

3 years ago

Read 2 more answers

Uau and uac both code for tyrosine. a change from uau to uac would thus be a _______ mutation; a change from uau to uag would be

Anton [14]

Thus be a SILENT mutation;
would be a NONSENSE mutation.
ʕ•ᴥ•ʔ

6 0

3 years ago

In the California poppy, an allele for yellow flowers (C) is dominant over an allele for white flowers (c). At an independently

asambeis [7]

Answer:

Parents: yellow, entire petals (CC FF) × white, fringed petals (cc ff) F1 (Cc Ff)

For the cross of a heterozygous F1 individual (Cc Ff) with a homozygous recessive

individual (cc ff) we would expect a phenotypic ratio of 1:1:1:1 for the different phenotypic classes.

Phenotype Observed (O) Expected (E) (O - E)2/ E or ( 2)

Yellow, entire 54 43.75 2.40

Yellow, fringed 58 43.75 4.64

White, entire 53 43.75 1.96

White, fringed 10 43.75 26.0

Total 175 175 35

Degrees of freedom = 4 - 1 = 3. The chi-square value is greater than 12.838 for a probability value less than .005, or 0.5% that random chance produced the observed ratio of California poppies.

B .t is unlikely that random variations produced the observed ratio.

Explanation:

Hope this help!!

Have a nice day!!

3 0

3 years ago

There are many traits for which it seems natural selection should favor an increase every generation, such as survival from birt

Tom [10]

Answer:

Natural selection has been studied since Charles Darwing first started his research.

Explanation:

Basically natural selection changes the frequency of traits. Left themselves in large , freely interbreeding populations, the frequency of traits will remain the same from generation to generation. The traits are often heritable, in living organisms, many characteristics are inherited, or passed from parent to offspring.

The reasons why we mightt not see a response to directional selection on such a trait are:

More offspring are produced than can survive.
Organisms are capable of producing more offspring than their environments can support.
Offspring vary in their heritable traits.

4 0

4 years ago