Produce a visual artifact showing before and after photos of the Vietnamese landscape, environment, and ecosystem to show the effects of the war

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this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

give brainlest

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering