Oxigen ,nitrogen ,carbon,and hydrogen.
The answer is true. You’re welcome
Answer: a hypothesis.
A hypothesis means a theory or a guessed explanation made, based on limited evidence as a starting point for further investigation.
Answer: True
Explanation:
Dysmenorrhea can be define as a condition in which pain occurs during menstrual cramps, that is due to uterine contractions.
Primary dysmenorrhea can be define as commonly occurring menstrual cramps. The secondary dysmenorrhea results from a disorder and pain in the reproductive organs.
A scientific model is a claim or a theory that helps explain how a phenomenon works or how it undergoes process. This models provides scientists an understanding of the object or a situation undergoes change and generate certain outcomes or effects.