You want to test which size of soccer (football) ball is easiest to juggle with your feet. You test a size 3, size 4 and a size 5 ball. You count the seconds the ball stays in the air for each of the trials. You allow yourself to use both of your feet, knees, and head to juggle the ball. a. Independent Variable: b. Dependent Variable: c. what would be Control group even if not stated?

Barnacles and mussel after filter feeders that attach themselves to rocks in the ocean. they eat by filtering small particles of food from the ocean water as it flows over them. a scientist observed a dense colony of barnacles covering the surface of the rock. the mussels were only able to attach to a few, small cervices on the same rock.< br /> < br /> evaluate the observation and explain a limiting factor that is affecting the barnacles and mussels on the ocean rock< br /> < br /> ive been reading the lesson for that past 3 hours and i still cant ..i'm dumb yeaa i know );