The correct match is
Atom: A) the basic unit of an element.
Atom is the smallest and structural unit of any element.
Particle: D) a tiny fragment or piece of matter.
A particle can be defined as a minute or small piece, fragment or portion of any matter. It may be used to access many physical and chemical properties such as density, volume, mass etc.
Phase: C) unique form of matter in which it can exist.
Phase can be defined as a particular state in which any matter can exists. Generally, matter can exists in three phases namely; solid, liquid, and gas. Plasma is the fourth phase which exists at very high temperature and pressure.
Scientific theory: B) an explanation for some naturally occurring event.
Scientific theory can be explained as a group of postulations or hypothesis formulated in order to explain naturally occurring phenomenon or event. These hypothesis are repeatedly confirmed with the help of experiments or observations.
Answer: Tobacco/Smoke
Explanation:
When it goes into your lungs, it affects you causing a way to have difficulty breathing.
Experimental design refers to how participants are allocated to the different groups in an experiment. Types of design include repeated measures, independent groups, and matched pairs designs.
4.use of images from space
The answer is B. Hope this helps you!
-Belle
