Compound: two or more different atoms chemically bonded together. Molecule: two or more different or same atoms chemically bonded together. A mixture: contains two or more substances that are not chemically bonded together Hope this helps!!!!!!
Years would be the independent variable because any sort of time is usually the independent variable.
The production of numerous small offspring followed by exponential population growth is the defining characteristic of r-selected<span> species. They require short gestation periods, mature quickly (and thus require little or no parental care), and possess short life span</span>
<span>The aurora borealis (northern lights) form when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. These collisions result in countless little bursts of light, called photons, which make up the aurora.</span>
