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Which of the following was most likely not present in creating the fatty acids of early Earth's waters of the past?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
Which of the following is the main evidence of life in the early universe?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
Which of the following provided a hypothesis as to how the universe began?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
Which stage is the last stage of speciation?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
Which of the following would have resulted from the functions of prokaryotes on early Earth?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
Certain types of atoms break down at a known rate. Scientists can measure the amounts of the broken down products present in a sample to calculate its age. What is this technique called?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
How did Charles Darwin provide evidence that evolution occurs?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
It is estimated that only one in a thousand sea turtles make it from eggs to adults. What is this an example of?
phosphorus
overproduction
more oxygen gas became present in the atmosphere
photosynthetic bacteria
He compared two groups of finches to illustrate natural selection.
radiometric dating
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
the big bang theory
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