Answer:
using only two types of seeds, both from the same source, repeating the experiment indoors under growth lights, and measuring plant height the same way and at the same time for both groups
Explanation:
Answer:
chemical reactions are: the combination of elements to form compounds, the ... Equations may be expressed in words: Mercury(II) oxide decomposes to mercury and oxygen. ... The arrow ( ) means "reacts to form" or "yields.
Explanation:
Valence must be considered and whether the substance is an atom or molecule, for example: 2Na + Cl2=>2 NaCl
<span>A chemical element is a pure substance that consists entirely of one type of atom. - Atoms of the same element that differ in the number of neutrons are called isotopes. ... The atoms in compounds are held together by chemical bonds. Electrons that are available to form bonds are called valence electrons.</span>
Answer:
Chlorophyll
Explanation:
This is the green pigment that allows photosynthesis to occur
Mitochondria: cell energy
Cytoplasm: what fills the space between organelles in a cell
Chlorine: not sure but you they put it in pools