true or false. interstellar reddening is due to dust grains scattering blue light and letting red light pass.

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

The layers of earth are based on what two sets of characteristics?

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.