3. all the living things in the forest ecosystem.
Answer:
Xe
Explanation:
Cs and Na are solids in room temperature while F and Xe are gases.
The number of electrons in the outermost shell of an atom will determine its reactivity. Out of the gases given Xe and F, F ( the most electronegative element) posses 5 valence shell electrons which makes it highly reactive while Xe which is a noble gas posses 8 valence shell electrons which makes it less reactive compared to many elements.
It is determined by the,
size of Image / size of object
A geochemical cycle is the pathway that involves the movement of elements or substances in the Earth's surface and the crust. I believe the answer are hydrologic, heat, and rock. These are the three main geochemical cycles of the Earth and are responsible of continuously removing and adding materials here on Earth.
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.
