Pls help ASAP! This is due today!

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?