Answer:
earth I think like that because earth is the second planet
Answer:
It is already balanced equation
Answer:
Element
Explanation:
An element is substance that is composed of only one kind of atom and can not be separated into simpler substances or converted into another substance by chemical processes.
Chemical elements are found in the periodic table. Examples of chemical elements include; sodium potassium, phosphorus, hydrogen etc.
Answer:
By presenting the results in a poster session.
Explanation:
Several scientists from different countries are asked to examine the results of an experiment before a journal will print it.