Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
Pharmacists and doctors are allowed to prescribe medications
Hope this helps :)
Answer:
"heart attacks are most often caused by a sudden drop in blood pressure."
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You can lose weight by eating healthier and/or working out more.
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If the person is young, bad posture can result in tight muscles which can cause pain within hours and OVER TIME (like months or YEARS) it could cause your spinal column to hyperextend and cause disk herniations which can be painful. So if you can only pick one answer, I would pick A, Poor posture can result in tight muscles. Think about when you get a sore neck from texting for too long. It's from straining your neck muscles to support the weight of you head in an unnatural (hunched over) position, AKA poor posture. But if you can pick more than one answer than I would go for A and B, because older people develop chronic pain and spinal arthritis (osteoarthritis) from everyday wear and tear on the spine from poor posture.
Explanation: Some tests let you choose more than one answer, I'm giving you the first answer to go for (Answer A) and a second one, (Answer B) if the test is saying "choose all correct answers."