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alexandr1967 [171]
2 years ago
6

What organism has been found in the oldest fossils?.

Biology
1 answer:
jok3333 [9.3K]2 years ago
4 0

Answer:

cyanobacteria

Explanation:

The cyanobacteria have an extensive fossil record. The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old.

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What is indicated by two species having similar amino acids in the hemoglobin protein?
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3 years ago
Easy question. Will give brainliest
Law Incorporation [45]

Answer:

The commensal relationship between the sharks and remoras can be described as although remoras consume parasites, sharks with remoras show no better health or growth than sharks without remoras.

Explanation:

A commensal relationship refers to a relationship where two or more organisms in a habitat neither benefit or harm each other.

  • The second option infers that the remoras harm the sharks. This is a parasitic relationship.
  • The third option infers that the sharks are harmed by the remoras because the sharks depend on something that the remoras are limiting. This is also a parasitic relationship.
  • The fourth option infers a commensal relationship, but falsely describes it. The relationship described by this option is a parasitic relationship (one benefits, the other does not).

Therefore, the answer is the first option: Although remoras consume parasites, sharks with remoras show no better health or growth than sharks without remoras.

5 0
3 years ago
Read 2 more answers
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