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lys-0071 [83]
3 years ago
8

Which of the following pairs of planets have the most in common?

Biology
1 answer:
viktelen [127]3 years ago
7 0

Answer:

B.

Explanation:

Venus and Mercury are the two hottest planets in the Solar System, cause they orbit the closest to the sun but not in the order that you’d think. Even though Mercury orbits closer to the Sun than Venus, it lacks an atmosphere.

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Fossil fuels have been used for years as a source
VMariaS [17]


The best answer is (1)

Fossil fuels are commercially available as an energy source.

They are very easy to find. More and more extractions of fossil fuels is going on everyday. With advancement in science and  technology, the refineries and extraction procedures have improved a lot. This makes their availability even better.

Fossil fuels are also easily combustible. Most combustion engines need to be powered with little amount of fuel to produce large amount of energy. Very large amounts of electricity can be  generated  from fossil fuels.

3 0
3 years ago
Most of a cell's molecules can be classified as belonging to one of four major classes: lipids, carbohydrates, nucleotides, or a
goblinko [34]

Answer:

Diagram, in attachments

Explanation:

From the left side of the screen to the right,that is from a structure with a sugar structure with two other molecules  attached to it.

The first molecular structure is Nucleotides. Reasons it contains the middle ribose sugar(5-carbon)connected to the phosphate group and  Nitrogenous bases.This is the structure of nucleotides  and when this is joined by phosphodiester bond between one a nucleotide, to the phosphate group of another  nucleotide molecule  it forms a nucleic acid molecule.

The second structure from left to right with  long carbon chains, it is  a lipid.That js an Ester formed from the reaction of fatty acids with alcohol glycerol.

However, the presence of Phophate group in structure makes it different from a normal tryglycerides.The phosphate group has replaced  one of the  the three fatty acid molecules.Therefore it is called Phospholipid.With one hydropholic ends(phosphate ends) and the hyrophobic end the  carbon chain,with one unsaturated. The lipids molecules are held together my ester bonds.

The next structure is the protein structure(dipeptide).Genrally amino acid is made up of the central Alpha carbon connected on the right by the Carbonyl group(coo-) on the left by the Amine(NH2) group.The R-group which determines the type of amino acids  and hyrdogen atom.In the above structure condensation reaction  has occurred between the hydrogen atom  of  the amine group and carbonyl group of the other amino unit to form a dipeptide.The  bond formed from the condensation is the peptide bond.

The last structure on the far right are the carbohydrate -ring structure and the straight chains.The functional groups of the CHO  -Carbonyl group and hydroxyl group are glues to this.

3 0
3 years ago
explain how nitrogen atoms are transferred from dead mustard plants materisl into new marigold seedlings
liberstina [14]
Dead mustard plants disintegrate into the soil And the worms in the soil see it and are like woah man let’s fricking rave! So these worms rave until the riff of dawn and the air gets so dense it just turns into nitrogen. The rave vibes were so lit that the nitrogen had this gold ora to it. The worms gathered it all and in a way, molded it into a seedling. They were like “ we gonna name it marigold cuz we had a pretty merry good time”. So yea science is wild isn’t it?
5 0
3 years ago
What advances have happened that allow us to look inside the living human brain?
Scilla [17]

Neuroimaging or brain imaging is the use of various techniques to either directly or indirectly image the structure, function/pharmacology of the nervous system. It is a relatively new discipline within medicine, neuroscience, and psychology.

8 0
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Why are the carbon cycle, the phosphorous cycle, the water cycle, and the nitrogen cycle all considered to be biogeochemical cyc
svlad2 [7]
B, both chemical and biological factors are involved
4 0
3 years ago
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