Can anybody tell me why they keep deleting everything i put i keep all these accounts and they keep removing them all

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii

What information does a survey provide? a. an accurate description of the population surveyed b. whether there is a predictive relationship between two variables? c. whether there is a cause-and-effect relationship between two variables d. none

50 ppm (50 mg/kg) is equal to 0.005%. how many ppm is equal to 5%?