Answer:
c. Substance
Explanation:
A composition variable is an intensive property that indicates the relative amount of a particular species or substance in a phase.
Answer:
When iron is heated in air it reacts with oxygen to form the compound iron oxide. Iron is a solid and oxygen is a gas. 5 Draw diagrams to show how the atoms are arranged in iron, oxygen and iron oxide in the circles below their names. Use different colours for the iron atoms and the oxygen atoms.
Explanation:
Answer: a rock being in one place over a long time and eventually wearing away
Explanation:
:)
Answer: A lot of food chains
Explanation: A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
