Scientists are investigating how well different microphones capture and record sounds. they use tools that show how loud the high and low sounds are and a tool that shows how much noise is recorded along with the actual sounds. which is a scientific question that could be included in this investigation?

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?

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