1. Isotopes have the same number of protons and different number of
A. Electrons
B. Neutrons
C. Both electrons and neutrons
D. Neither electrons nor neutrons

B. Neutrons

Explanation: Isotopes are atoms of an element which have the same atomic number (number of protons) but different atomic mass or mass number. Atomic mass or mass number of an atom is the sum of the number of protons and neutrons in the nucleus of an atom. The difference in their mass number is due to the difference in the number of neutrons. A phenomenon whereby there is existence of atoms of the same element which have the same atomic number but different mass number is known as isotopy.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.