Answer:
N
Explanation:
Both carbohydrates and lipids contain Carbon, Hydrogen, and Oxygen. However, all proteins have Nitrogen as well.
Answer:
Cells and tissue
Explanation:
Cells are the most basic unit of life made up of several organelles that perform various functions which enables the cell to exist.
An aggregation of cells is called a tissue. The bone is composed of several interconnected cells and tissues.
A bone heals when bone cells and tissues are gradually repaired. Hence, the most basic levels of organization involved when a bone heals are cells and tissues.
Answer: Memory B cells
Explanation:
Memory B cells remember the same pathogen for faster antibody production in future infections.
Answer:
Coal
Explanation:
Helped work become faster.