Choose the option that best matches the description given. I will give the right answer Brainliest. Human services organizations seek to make changes and help people in need to improve their .

employment options
defense mechanisms
quality of life

i'd say that the moon rock is about 2.2 billion years old.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

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only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.