Answer: D) Building cars that give off less pollution!
Hope this helps!! :D
Pili are the filaments that help some bacteria stick to surfaces and exchange plasmids through conjugation.
Pili are hollow, hair like appendages that are found on the surface of some bacterial cells. Pili are composed of a special protein (known as pilin). Pilia act as a means of attachment of bacteria to surfaces (such as their host) and it is also used by bacteria to exchange their genetic material (plasmids) in the mating process between cells (known as conjugation).
The number indicates the number of atoms of each element in a molecule of a substance is the script number to the right of the element indicates the number of atoms. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
I think either C or B could be the answer
You can also find photosynthesis, the carbon cycle, the water cycle and others
