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Serggg [28]
3 years ago
13

How are fossil fuels created?

Biology
1 answer:
Elza [17]3 years ago
6 0

Answer:They are created by decomposed plants and animals which were altered to natural gas, heavy oils or crude oil due to being exposed to a lot of heat and pressure in the earth's crust over millions of years.

Explanation:

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If you cross two organisms that are heterozygous for a trait, what percent of
brilliants [131]

Answer:

25%

Explanation:

Here's an example: two chickens have the phenotype of white feathers and brown feathers. What percentage of the chicks will have the recessive color? First, you have to see the parents' phenotypes. Draw a punnet square. Put one of the parent's phenotypes (w and B) on the top, and the other parent's (w and B) on the right side going down. Whichever trait is dominant (brown) MUST be capitalized. Then, cross the two parents. first box on the top left would read 'ww.' The one below it is 'Bw' (put the dominant first). The right top is 'Bw' and the one below it is 'BB'. So if there were 4 offspring, these would be their genotypes: 'ww', 'Bw', 'Bw', and 'BB'. The only offspring that would have the recessive trait is the 'ww' child, because dominant overpowers recessive. So 25% would have the recessive trait and 75% would have the dominant trait.

7 0
3 years ago
What is an important structural molecule of cell membrane..?
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Most important and abundant one are the phospholipids - amphiphatic molecules with an hydrophilic head and a hydrophobic hydrocarbon tails. They compose the membrane bilayer. Also important are the membrane proteins, which can be periheric and internal and can serve as channels, receptors, pumps etc. 
Depending on the cell type the membrane can also contain cholesterol (in animal cells, enhances the membrane stability) or hopanes(in prokaryotes, same function as cholesterol) or ether-phospholipids with branched hydroharbon tails(in archaea, make the membranes more stable and resistant to severe conditions, as archaeas are extremophiles)
8 0
3 years ago
A cow has alleles for both black and
Rina8888 [55]

Answer:B

Explanation:

Codominant is when neither allele is recessive so they are both expressed in the phenotype

7 0
3 years ago
A female cat has two recessive genes for long fur (ss) and a male cat has two dominant genes for short fur (SS). What is the lik
amid [387]

Answer:

There is an 100% chance that there will be short fur due to the male having two dominant genes, which means that the recessive genes can not be expressed.

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Which of the following is a droplet infection
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c.malaria

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Malaria is a serious and sometimes fatal disease caused by a parasite that commonly infects a certain type of mosquito which feeds on humans. People who get malaria are typically very sick with high fevers, shaking chills, and flu-like illness. Four kinds of malaria parasites infect humans: Plasmodium falciparum, P.

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