Different (blank) of an element have different numbers of neutrons

The correct answer is isotopes.

Explanation:

Isotopes are defined as the chemical species of the same element which has different atomic mass but have same atomic number.

It can also be said that they have different number of neutrons but have same number of protons.

For Example:   are the isotopes of carbon. They have 6 and 8 number of neutrons respectively.

Hence, different isotopes of an element will have different number of neutrons.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

the correct answer to this question is #5