In order to have a contact force acting on an object, the force
a. must be positive
b. must be negative
c. must be touching the object
d. cannot be touching the object

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Type the correct answer in the box. spell all words correctly.what is the correct term for living the most sustainable life you can within your current circumstances? when your are being as sustainable as you can within your current lifestyle, you are said to be sustainability.

Which of the following is not true about the atomic model of substances?