Answer:
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Answer:
four oxygen molecules
Explanation:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
Because the species of finches on the Galápagos island have various appearances but still mate with other finches and produce fertile offspring making it is difficult for scientists to distinguish between two groups of individuals as separate species.
<h3>What is the island of Galápagos?</h3>
The Pacific Ocean island of Galápagos is located to the west of Ecuador. It is a volcanic island known for its diverse and endemic types of living things.
<h3>Why is it difficult to find new species in Finches?</h3>
Charles Darwin spent several years studying the many species of finches on the Galápagos island. He saw a great deal of variation in these finches, which supports the hypothesis of natural selection.
However. it is challenging for scientists to discern between two separate species because the species of finches on the Galápagos island have a variety of features that are different but still mate with other finches and produce fertile offspring.
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Answer:
Hypothesis, controlled conditions, "if then" statement, scientific investigation, observation.
Explanation:
Hypothesis: An idea proposed for an argument to be tested if it's true.
Controlled Conditions: An experiment that doesn't manipulate the independent variable.
If then statements: These sentences present situations and their outcomes.
Scientific Investigation: A plan for asking questions and testing possible answers.
Observation: Using one of the senses (hearing, seeing, tasting, smell, touching) or measurements to gather data.
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