Answer:
D
Explanation:
Location of the fossils whether its deep in the earth surface or shallow.
Answer:
Some examples of anaerobic respiration include alcohol fermentation, lactic acid fermentation and in decomposition of organic matter. The equation is: glucose + enzymes = carbon dioxide + ethanol / lactic acid. Though it does not produce as much energy as aerobic respiration, it gets the job done.
Neurons. Neurons are specialized cells that carry messages within the human brain. ...
Muscle Cells. Muscle cells make movement possible. ...
Sperm Cells. Specialized sperm cells are necessary for human reproduction. ...
Red Blood Cells. ...
Leukocyte.
Concentration gradient= the difference in the concentration of a substance between two areas.