Atom,molecule,cell,tissue,organism,population,ecosystem,biosphere.
Answer:
Columnar epithelial cells are elongated and column-shaped and have a height of at least four times their width. Their nuclei are elongated and are usually located near the base of the cells. Columnar epithelium forms the lining of the stomach and intestines
Explanation:
Epithelium - Wikipedia
Hope this helps : )
Answer:
Mutations are random Mutations can be beneficial, neutral, or harmful for the organism, but mutations do not “try” to supply what the organism “needs.”
Explanation:
Sperm production is hormonally driven. Brain hormones govern sperm production and are precisely controlled. So I say yes