How is cancer spread through the body? check all that apply. -through the nervous system -through the blood -through touching organs and tissue

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

What two fields of study provide the core information that is used to classify organisms?

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