What igneous rock property indicates that it has dark and dense minerals

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

Ineed , i need to create a power point in life science here is a picture explaining a little what the topic is about, me with some information for my slides : (

The us labor movement began in the a. 1930s b. 1920s c. 1880s d. 1860s select the best answer from the choices provided. a b c d