Answer:
it is that worker bee's work for the queen bee because the queen bee is really old while the worker bee's are young
Explanation:
Answer:
If you ate a cookie while you were upside down, your body would try it's best to bring the food to the stomach. There are other forces other than gravity that will help the cookie get to the stomach.
Hope this helps!
Answer:
<em>True</em><em> </em><em>.</em><em> </em><em>I</em><em> </em><em>think</em><em> </em><em>it's </em><em>true</em><em>.</em><em> </em><em>hope</em><em> </em><em>this</em><em> </em><em>helps</em>
Answer:
Our atmosphere (air) is comprised of 78% of nitrogen. However, this nitrogen is in its elementary state (N₂) and therefore is quite inactive, so the plants can not use it directly. Changing the elementary nitrogen into more reactive forms (NH₃, NO₂, HNO₃) is occurring through the process called nitrogen fixation. It is happening via two processes.
First one is physical nitrogen fixation. When some type of atmospheric physical energy (lightning bolt, for example) reacts with N₂, it splits it in two very reactive N atoms, enabling them to react with oxygen in order to form NO₂.
Second process is biological nitrogen fixation. It's done by bacteria, special bacteria living in the soil, able to use elementary nitrogen for its metabolical pathways resulting in production of ammonia, which can be used by plants. It's noteworthy that bacteria are responsible for about 90% of all nitrogen fixation.
The planarian has a soft, flat, wedge shaped body and both ends of the body are different
