Answer:
the hydrosphere: all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
B. rivers
The correct option is C.
Pilli is a long protein filament which attach reproducing cells together during conjugation. This attachment allows the cells to exchange the genetic materials, that is, plasmid between them.
Remember that the number of electrons are equal to the number of protons, and to find the number of protons you have to look and see the atomic mass of the atom is equal to the number of protons, and to find the number of neutrons you have too subtract the atomic mass to the atomic number.
Example:
You want to find out how many protons, neutrons, and electrons are in Platinum:
- Atomic number is equal to the number of protons:

- So platinum has 78 protons and electrons.
- Subtract atomic mass to atomic number:
(forgetting about the decimals)
So platinum has "78 protons, and electrons, and has 117 neutrons."
Hope this helps!