Simplex, simplex, and half duplex.
Hope this helps!!
Answer:
4160000 bytes
Explanation:
One page = 52 lines of text
One line of text = 80 characters
=> One page = 80 x 52 = 4160 characters
Therefore, 500 pages of text will have 4160 x 500 characters = 2080000 characters.
Since 1 character takes up 2 bytes of computer memory, it impleies that a 500 page novel will take up 2080000 x 2 bytes = 4160000 bytes.
The most obvious one would be recycling, another one would be to use plastic bags to hold things in your house, instead of boxes. I run a business, and my business requires me to ship a lot. I often use plastic bags as packaging material. Hope this helps!