The hollow bones of birds, which keep birds lightweight foe flying, is an example of what

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

What molecules does hemoglobin decay into over time

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm