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IgorC [24]
3 years ago
13

Choose all the answers that apply. Evolution _____. happens slowly over time is any change in the DNA of an organism only occurs

below the species level can be caused by genetic drift can be caused by natural selection
Biology
1 answer:
xxMikexx [17]3 years ago
6 0

Answer: The Answers are, A: happens all the time, D: can be caused by genetic drift, and E: can be caused by natural selection.

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List ten sources of water polution (LIST FORM, NOT LIKE AN ESSAY PLEASE!)
nadezda [96]

Answer:

  1. Industrial waste (toxic chemicals)
  2. Sewage (contains harmful bacteria)
  3. Oil spills from boats
  4. Agriculture (pesticides and animal waste)
  5. Radioactive waste from nuclear powerplants
  6. Dumping trash (trash such as plastics, glass, styrofoam, etc.)
  7. Acid rain (caused by the burning of fossil fuels)
  8. Mining activities (particles from mining)
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3 years ago
Which of the following statements correctly identifies the location of the hydrogens bonds in DNA
asambeis [7]

Answer:

This question is incomplete as it lacks options. However, it can be answered based on general knowledge of the DNA structure.

Hydrogen bonds in a DNA are located between the nucleotides that holds the double stranded DNA molecules.

Explanation:

Deoxyribonucleic acid (DNA) is the genetic material in living cells. The DNA molecule is made up of nucleotides monomers. However, since the DNA molecule is double-stranded, the nucleotides are of two chains composed of four nucleotide subunits viz: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C).

The two chains of nucleotides in a DNA molecule are called strands. Each strand is bonded to one another by the nucleotides using complementary base pairing i.e. A-T, G-C. The bonds between the nucleotidew of each strand is called HYDROGEN BOND.

Hence, HYDROGEN BONDS in a DNA molecule is located in between two nucleotides of each strand. That is, hydrogen bond holds Adenine to Thymine and Guanine to Cytosine.

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2 years ago
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The function of the eardrum in the middle ear is to
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The answer is B- Vibrate <span>with the frequency of the received sound.</span>
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