Answer:
choice 3
Explanation:
homeostasis is the ability of an organism to remain in balance so for two systems two show homeostasis pick the choice that shows two separate systems working together for a common goal in this case breathing.
A change in the force of gravity on an object will affect its weight.
Liquid solution - oceans
gaseous solution - air
compound - water
colloid - clouds
element - oxygen
There are 30 protons and 39 neutrons in the nucleus.
This must me the isotope of an element with an atomic mass close to 69 u.
The only candidates are Zn and Ga.
Zn has a zinc-69 isotope with mass 68.926 u.
Ga has a gallium -69 isotope with mass 68.925 u.
The isotope is probably
.
It has 30 protons and 39 neutrons.
Answer:
<h2>
"The sound wave traveled more quickly through the water than the balloon."</h2>
Explanation:
A sound is produced by <em>vibration. </em>These vibrations are called<u><em> "sound waves."</em></u> In order for sound waves to travel, it needs a particular medium. This medium can either be <em>solid, liquid or gas.</em>
Remember that sound waves travel faster in a <u>"solid medium,"</u> because this matter is denser than the other two. Sound waves travel faster in liquid than in gas, because water is densely packed with particles than gas (such as air).
In the situation above, the answer is "The sound wave traveled more quickly through the water than the balloon." As I've mentioned earlier, sound waves travel faster in liquid than in gas. Thus, the sound waves traveled faster through the glass of water (liquid) than the helium (gas) balloon.
