Ellie is visiting the Grand Canyon on her summer vacation. Everyone in her tour group marvels at the different rock
layers and colors within the canyon. A lot of them are wondering, "Why do the layers vary in color?" How could Ellie
use the scientific inquiry process to find out? Check all that apply.
She could research what geologists have already discovered about the canyon.
She could match the colors with those of other objects at home.
She could hike into the canyon and make observations of the rocks in each layer.
She could ask other visitors what they think about why the colors vary.
She could compare her observations of the rock layers to other rock layers in the area,

She could research what geologists have already discovered about the canyon.

She could hike into the canyon and make observations of the rocks in each layer.

She could compare her observations of the rock layers to other rock layers in the area.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.