Radioactive carbon-14 is often useful in determining the absolute age of geologic samples because radioactive isotopes. 1 decay at a regular rate

2 become less stable during decay

3 remain unchanged over time

4 stabilize after four half-lives​

Decay at a regular rate

Explanation:

decay at a regular rate

Explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

here are the traits of a good leader.i'm not going to give you the examples so you can copy right it.that's illegal but i hope that this you out.