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2 years ago

When are fossil fuels harmful to the environment?

1 answer:

5 0

Fossil fuels are harmful to the environment when they are exposed to the air. So, the correct option is B.

<h3>What do you mean by Environment?</h3>

An environment may be defined as anything that is present in the surroundings of living entities whether biotic or abiotic factors.

After burning, fossil fuels are exposed to air and cause air pollution that results in acid rain, eutrophication, a severe threat to crops and forests, and major harm to biodiversity.

Therefore, the correct option for this question is B.

To learn more about Fossil fuels, refer to the link:

brainly.com/question/79954

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Explain how natural selection could lead to a change in allele frequency leading to a change in the color of the frogs.

Pie

Answer:

Due to increasing the survival.

Explanation:

The natural selection causes a change in allele frequency leading to a change in the color of the frogs because the colour of the frog helps it in hiding from predators. The population of that frog specie increases which has the ability to hide from the predators in that environment while on the other hand, the population of frog decreases which can easily be seen by the predator due to its colour so this change in allele frequency will leads to natural selection.

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3 years ago

Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocy

Fudgin [204]

Answer:

This is because fluids have a polar nature, so they couldn´t cross the lipidic bilayer that constitutes the plasma membrane

Explanation:

Plasma membranes are contituted by lipid bilayers. These kind of compounds are hidrophobic (they reject water) and don´t permit the freely passage of hidriphilic molecules that can disolve in water, constituing fluids. Because of that cells developed transport mechanism like endocytosis.

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3 years ago

Read 2 more answers

There are two different alleles for flower color, P and p. The image shows a white sweet pea that is labeled with its two allele

Triss [41]

B. White petal colour is a recessive trait.

Explanation:

In Mendelian genetics, the alleles depicted in small letters are recessive traits.

Since both alleles are same and in lower case they are homozygous recessive alleles for a white coloured petal gene.

The genotype of the trait will be tt because if it is crossed either with heterozygous or homozygous P alleles it will appear as tt to have phenotypic trait of white colour.

So the genotype will be tt.

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3 years ago

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Bonjour ! On m'a posé cette question en cours d'SVT : décrivez le mécanisme qui permet d'expliquer la différence entre le nombre

kozerog [31]

Bonjour, je ne connais pas beaucoup le français, je suis donc traductrice. De mon point de vue, je suggère d'utiliser les informations dont vous disposez et de les utiliser sur le graphique. J'espère que cela a aidé.

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3 years ago

In the human body, which of the following is part of the axial skeleton?

evablogger [386]

The correct answer is B.

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3 years ago