Your Body Produces a surge of hormones when you're in stressful .These Hormones temporarily increase your blood pressure by causing your heart to narrow. There really no proof that stress by itself cause long term blood pressure.
a.) Some <span>bacterial </span><span>infections could be treated with antibiotics, while </span><span>viral </span>infections can't,
<span> b.) </span><span>Viruses </span><span>reproduce by replacing a cell's genetic information with its own, </span><span>bacteria </span>reproduces by binary fission,
<span> c.) </span><span>Bacteria </span><span>are considered a living organism, </span><span>viruses </span>aren't considered a living organism,
<span> d.) Most </span><span>viral </span><span>infections are harmful, most </span><span>bacterial </span>infections aren't harmful,
<span> e.) </span><span>Bacteria </span><span>has both DNA and RNA, while </span><span>viruses </span><span>have either DNA </span>or<span> RNA, but </span><span>NOT </span><span>both.</span>
<span>a. Rollerblading
Exercise that strengthens your heart and lungs is called aerobic exercise. And in order for aerobic exercise to work, you need to elevate your heart rate for at least 20 to 30 minutes. So let's take a look at the various exercises listed and see what each does.
Rollerblading - Moderate amount of effort, but happens over an extended period of time. Definitely aerobic, good candidate for the correct answer.
Pull-ups - This helps strengthen the upper back, shoulders, lats, and abs. Useful for building muscle strength, but not very aerobic. Not the correct answer.
Push-ups - Strengthen the chest, shoulders, and triceps. Another exercise for building strength, but not aerobic. Not the correct answer.
Rock Climbing - Helps build agility and strength. But also not very aerobic. Also not the correct answer.
So of the four exercises mentioned, only one of them involves sustained moderate effort over an extended period and that's rollerblading which is the correct answer.</span>