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sasho [114]
3 years ago
13

The main pieces of information about the earth's age come from _____.

Biology
2 answers:
katrin [286]3 years ago
6 0

Rocks. I hope you get it right.

Tju [1.3M]3 years ago
4 0

Radiometric age-dating

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What is the variety of gene combinations that exist within a population called?
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Answer:

Answer: The collection of all the genes and the various alternate or allelic forms of those genes within a population is called gene pool.

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A. Review What are the major elements of life?
tino4ka555 [31]

Answer:

1. The major elements of life are Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus and Sulfur.

2. Its ability to catenate; its ability to form bonds easily with other elements such as hydrogen, oxygen and nitrogen; its ability to form single, double and triple.

3. Carbohydrates, Proteins, Lipids, and Nucleic acids

4. Carbohydrate provide energy; Proteins serve as structural elements;

Lipids serve as structural components of membranes;

Nucleic acids store and transmit genetic information

5. Proteins are considered polymers while Lipids are not because proteins are composed of monomeric subunits of amino acids whereas lipids do not have monomeric subunits.

Explanation:

1. The major elements of life are Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus and Sulfur as they are found in many structures of living organisms- in proteins, carbohydrates, nucleic acids and lipids.

2. Carbon has the ability to form different large and complex structures because:

(I) its ability to catenate which is the ability to combine with one another to form straight, branched chain or ring compounds containing many carbon atoms.

(ii) carbon can form single, double and triple with itself and other life elements.

(iii) the relative stability of the covalent bonds formed by carbon.

3. Four groups of organic compounds found in living things are Carbohydrates, Proteins, Lipids, and Nucleic acids.

4. Carbohydrate provide energy; Proteins serve as structural elements;

Lipids serve as structural components of membranes;

Nucleic acids store and transmit genetic information

5. Polymers are large molecular weight compounds built up from subunits called monomers.

Proteins are considered polymers because they are large molecular weight molecules composed of monomeric subunits of amino acids.

Lipids are not considered polymers because individually, they are not very large molecules and do not have monomeric subunits rather are composed of long fatty acids chains linked to a glycerol molecule.

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How can dna sequencing be used to identify other classes of pathogens, such as viruses?
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DNA sequencing technique runs through database so it can compares all the sequenced information and finds similarities.

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Explain latitudinal gradient in terms of biodiversity.
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This is an anion: ?
tatuchka [14]

Answer:

Is this an anion

Explanation:

yes

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