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They could discover which organisms are closely related to the mammoth, and which one is the most closely related.
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D. Man-Made is the answer
None of the above because they are non pollutant
The answer is B. Paleozoic
This era was the first era where insects, amphibians, and reptiles roamed the Earth.
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Answer:
C
Explanation:
discharging trash into lakes and rivers create pollution
- They produce, maintain and transport sperm (the male reproductive cells) and semen (the protective fluid around sperm).
- They discharge sperm into the female reproductive tract.
- They produce and secrete male sex hormones.
