Transparent materials allow light to pass through freely. translucent lets light pass through, but after the light is scattered.
A flashback, is a way of portraying events in the past to understand the current event that is connected to the present, that a could support in figuring the conclusion and answer to the problem of an event. I think the author use it as said in the definition. I hope this would help
Plant cells have cell walls and animal cells do not because the plant cell needs it for its activities.
