D bacteria are the main nitrogen transporters
I think but I do not know it refered to as being repetitive
16. Organelles can move around the cytoplasm and perform activities that are necessary for life. Each organelle has a different job.
17. The function of the nucleus is it's the main command of the cell which means that it controls most of the cell's activities.
18. It converts heat energy and turns it to food in which the cell can eat.
20. It helps control what enters and leaves the cell.
22. Cell Wall, Chloroplasts,
The correct answer is:
a. Jupiter
Explanation:
In 1610, Galileo Galilei turned his rudimentary telescope on Jupiter and understood that it had 4 large moons orbiting it: Io, Europa, Ganymede, and Callisto. This was an amazing discovery because it explained that Earth was not the center of the Universe as champions of the geocentric view assumed.
The X symbol looks too much like the multiplication symbol, it also makes using it as a variable more confusing.