7. beach sand is made out of feldspar and quartz
Because we now know that antibiotics can only treat bacterial infections. this includes strep throat and other things such as urinary infections. They won't treat viruses. You can treat the symptoms, but you can not treat the virus.
(Your doctor will also give you a prescription to prevent infection.)
The correct answer for this question is letter C. Epiglottis is the one who prevents food from entering the trachea. It moves in a back and forth manner. When a person swallows, it covers the entrance of the larynx by flattening itself backwards.
<span>Amoebas are able to protect themselves from unfavorable conditions by forming a "cyst." An amoeba is type of organism that has the ability to change its shape. The reason for this is for the reason of extending and retracting pseudopods.</span>
I think it is False. Heterotrophs are organisms that cannot make their own food. They obtain it from consuming other organisms. To make this statement true, you would have to replace the word, "heterotoph" with the word "phototroph" or "autotrophs".
