Answer:
A. Respiration
Explanation:
The process in which oxygen atoms are made available to the cell of animals is called cell respiration. In cell respiration the food molecules undergo process which is called food oxidization, that make it available to be absorbed by the animal cell.
The plant cells are in a tree. The cytokinesis is the cells in a plant's top root. Soo, it is divided into 5 parts.
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Http://www.biocab.org/Carbon_Dioxide_CO2.html
Answer:
Pb has an atomic mass of 82. If an atom of that element has an atomic mass of 80, that atom is known as: an isotope.
