The answer is bacteria because protoans is not in plural though its unicellural and bacteria is in plural and the question is asking in plural form
The component of exercise that primarily strengthens the heart is aerobics. This heart strengthening exercises may include biking, running, walking, swimming, aerobic dances and a lot more that are sure to add strength to your your heart, lungs and stamina.
I can't understand your language.
Answer:
Odd couple. Surprisingly, the team found evidence for isotopes of aluminium (which has 13 protons) with both 29 and 30 neutrons.copper
For April, we have selected copper, a transition metal with chemical symbol Cu and atomic number 29.
Atomic Number19Atomic Mass39.0983 atomic mass unitsNumber of Protons19Number of Neutrons
copper
An isotope of copper contains 29 electrons, 29 protons, and 36 neutrons.
There must be 14 neutrons is a typical stable atom of aluminum.