Why do we need greenhouse gases in our air?

1 answer:

7 0

Greenhouse gases such as carbon dioxide trap heat, helping warm the globe. The surge in carbon dioxide levels due to human activity since the Industrial Revolution is now causing an overall warming of the planet that is having impacts around the globe. And the burning of fuel generates not only carbon dioxide, but also air pollutants that are harmful to human health.

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Mastering biology use the completed punnett square in part b to answer the questions below about the f2 generation. answer each

Sav [38]

1) The probability of F2 seed chosen at random will be yellow is the same as asking about the probability of forming a yellow seed in that generation. The answer is 3/4 (75%) because 1/4 = 25% GG is homozygous dominant and the rest 2/4 = 50% Gg are heterozygous.

2) In the F2 generation there are two genotypes that will breed true, which is homozygotic genotypes: GG and gg. But of these two, only one of them is yellow. The answer is 1/3 because from all the yellow seeds that resulted (GG, Gg and gG) only one has the genotype for true breeding.

3) The probability of taking out three seeds in which a least one is yellow can be calculated by subtracting the only probability that doesn't fit the criterion, which is taking out a green seed 3 times: $\frac{1}{4} * \frac{1}{4} * \frac{1}{4}$ = 1/64.
Then substract that to 1 $1- \frac{1}{64}$ = $\frac{63}{64}$

4) there are three possible groupings in which the green is taken once and the yellow seeds taken twice. The first possibility (follow the example) is the green being the first to come out, another possibility is being the second and the last possibility is being taken in the third time.
For example, Green yellow yellow- probability : 
 $\frac{1}{4} * \frac{3}{4} * \frac{3}{4}$ = 9/64

This is one possibily, but since there are 3, multiply it by 3 and you obtain the final answer:27/64.

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4 years ago

Read 2 more answers

MATCH THE FOLLOWING

Kaylis [27]

Answer:

1) Homologous chromosomes are chromosomes that are the same in size and shape and control the same characteristics; occur in pairs in higher animals and plants

2) Internal fertilization is a mating pattern in which the male and female come close together, the male introduces the sperm into the body of the female, and fertilization occurs. It is practiced by mammals like goat, sheep etc

3) Pollination is the transfer of pollen from male to female cones in gymnosperms, or from anther to stigma in flowering plants. It is effected by insects, birds, bats and the wind.

4) Zygote is the result of fertilization in which two gametes have fused together; often simply called a fertilized egg.

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3 years ago

While doing field research, two scientists discover a new species of plant. They take the plant back to their lab to watch how i

MAVERICK [17]

As the new species of plant produced purple flowers, so, the plant belongs to the angiosperms group. Also, the seeds of the plant contain two embryonic leaves, so, the plant must be a dicot.

Out of all five divisions of plants, only the plants that come under the Division Angiosperm can bear or form flowers. That's why angiosperms are also called flowering plants.
Angiosperms are further divided into two groups based on the number of embryos that are produced from seeds on germination.
If the germinating seeds contain only one embryo leaf, then we call them monocots while the seeds that contain two embryo leaves during their developing seeds, then they are called dicots.

Thus, the plant that is discovered by scientists comes under the angiosperm group and further into the dicot group. Dicots have two embryo leaves on germination of their seeds and they also form flowers.

Learn more about angiosperms here:

brainly.com/question/9416370

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3 years ago

A smoker sees his doctor because he had a persistent cough for months and is short of breath after very little exertion. what di

koban [17]

Caused by the body clearing out the chemicals that enter through the airways and lungs through tobacco use. Leads to a variety of other conditions like bronchitis, higher risk of bacterial and respiratory infections, emphysema, COPD, and lung cancer
Hope this helps you!

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4 years ago

Which of the following accurately describes junction diodes

DanielleElmas [232]

D. In a forward-biased setup, large numbers of charge carriers will be pulled across the junction and result in a large current.

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4 years ago