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Step2247 [10]
2 years ago
9

Which of the following are fossil fuels (choose all that apply)

Biology
1 answer:
noname [10]2 years ago
4 0

Answer:

Natural Gas

Petroleum

Coal

Explanation:

1) Ethanol is not a fossil fuel

2) 94% of ethanol is produced from the starch in corn grain

3) fossil fuel definition: a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

4) fossil fuels are usually found in the earth's crust... not made from corn grain

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In a population of 200, 86 individuals express the recessive phenotype. What percent of the population would you predict would b
Nitella [24]

Answer:

The correct option is;

D. 45%

Explanation:

From the Hardy- Weinberg law, we have;

p² + 2·p·q + q² = 1

p + q = 1

Where:

p = Dom inant allele frequency in the population

q = Recessive allele frequency in the population

p² = The percentage of individuals in the population that are hom ozygous dominant

q² = The percentage of individuals in the population that are homo zygous recessive

2×p×q = The percentage of hete rozyous individuals in the population

The number of individuals that express the recessive phenotype = 86

The number of individuals in the population = 200

The percentage of  individuals that express the recessive phenotype, q² = 86/200 = 0.43

Therefore;

q = √0.43 = 0.656

p + q = 1

p = 1 - q = 1 - 0.656= 0.344

∴ The frequency of  individuals that express the do minant phe notype, p = 0.344

The percentage of heterozyous individuals in the population = 2×p×q × 100 = 2 × 0.656 × 0.344 × 100 = 45.15% ≈ 45%

3 0
3 years ago
Features that are homologous are similar due to __________.
kkurt [141]

<span>The answer is shared an evolutionary history. Homologous structures evolved from the same ancestor structure. An example of homologous features is the four limbs of all tetrapods. In birds, the forelimbs evolved into wings while in crocodiles they still used for walking, and in humans, they evolved into hands. </span>






3 0
3 years ago
What is the contour interval or C.I.?
Katen [24]

the difference in altitude represented by the space between two contour lines on a map. At least i think youre looking for the definition. And if you are hope this helps :)

8 0
3 years ago
Read 2 more answers
How can material that was formed at the bottom of the ocean end up in a high place on land?
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B. They are determined by I, AB, A, or B
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