Some samples are too small for the naked eye but too large when viewed under a microscope. How can these samples be viewed?

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

What is the difference between an igneous, sedimentary and metamorphic rock

What are the seven economic and social goals?