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ivann1987 [24]
3 years ago
13

Which best describes nitrogen fixation? Nitrogen fixation is the process of creating free nitrogen for plants to absorb. Nitroge

n fixation is the breakdown of nitrogen in the soil. Nitrogen fixation is the conversion of nitrogen gas into a usable form. Nitrogen fixation is the destruction of the bonds between nitrogen and other elements.
Biology
2 answers:
blagie [28]3 years ago
6 0

Answer:

C. Nitrogen fixation is the conversion of nitrogen gas into a usable form.

Explanation:

 

Reika [66]3 years ago
5 0

Answer:

c

Explanation:

i took the test

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In a plant species, you notice that purple and yellow leaf colors, as well as hairy and smooth stems segregate independently. Yo
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Answer:

The required answer is given below:

Explanation:

a) Assuming C is the gene for leaf color and S is the gene for the stem type.

then, the genotypes for each parent would be-

Yellow leaves, hairy stem parent: ccSs

Purple leaves, hairy stem parent: CcSs

b) Expected ratios of the progeny as below:

68 yellow leaves, hairy stems: 3/8

66 purple leaves, hairy stems: 3/8

22 purple leaves, smooth stems: 1/8

25 yellow leaves, smooth stems: 1/8

Hence, the ratio is - 3:3:1:1

It might possible that  independently assorting single gene pairs could control traits, and that one of the alleles in each pair is dominant.

c) The general formula for calculating X2:

X2 =  the sum of (O - E)2/E,

(where O = observed number)

(E = expected number)

So,

(68 – 68)2 /68 + (66 – 68)2/68 + (22 – 23)2 /23 + (25 – 23)2/23

= 0.276

X2 = 0.276

The chi-square statistic too small, Hence the hypothesis is acceptable.

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Using the data below, determine which type of moth is best adapted to its environment.
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Light moths on light trees
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What is the purpose of a frogs heart cutaway
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The purpose of cutting a frog heart it too relate how the heart structure is. It is just a small scale of the human heart.

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In which order are the steps of the scientific method listed
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How does atherosclerosis affect blood pressure?
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Blood pressure is cardiac output versus resistance, especially in the capillaries.

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