Martha bought a six pack of soda on Thursday. She promised her neighbor, Mr. Jimmy, that she would save the cans for him. What are they doing to help our ecosystem?

They are potentially reducing and reusing, if he intends to do something with the cans.

Explanation:

1. Reducing by saving cans

2. Might reuse the cans for something like art maybe, reusing

this is math not biology xd

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.