Answer:
b. they are both asymmetrical. Placozoans have endoderm and ectoderm while sponges have no tissue.
Carbon 14 is a radioactive isotope of carbon
When humans and other animals lack sufficient oxygen, they'll create ATP through a form of anaerobic respiration that produces lactic acid as a byproduct. ... Yes 'Anaerobic' means 'without oxygen. Cells will produce ATP through lactic acid fermentation only under when they lack sufficient oxygen.
