18. is a mix of solid and liquid particles in the air, often caused by natural occurrences like a volcano eruption. A.) Carbon monoxide
B.)Particulate matter
C.)Acid precipitation
D.) Photochemical smog
E.)CFC's

PLEASE ANSWER ASAP IMPORTANT

In this assignment, you will analyze an example of speciation by researching the finches of the galapagos islands. then you will answer questions to construct explanations and draw conclusions based on the information you gather. someone plz !

Which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

Which particle controls what element an atom is?