Answer:
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Answer: Each of several hierarchical levels in an ecosystem.
Relating to feeding or nutrition.
Explanation: ...
Answer: 1. Cambrian period, 5. rotation at the shoulder joint. 3. d. notochord, 4. d 2. d.
Explanation:
Explanation: In humans, meiosis is the process by which sperm cells and egg cells are produced. In the male, meiosis takes place after puberty. Diploid cells within the testes undergo meiosis to produce haploid sperm cells with 23 chromosomes. A single diploid cell yields four haploid sperm cells through meiosis.