Answer:
7
Explanation:
Na2 SO4 is the chemical identity. You can count the number of atoms just by looking
I guess it is gases
I think , coz it has its own shape
Moves randomly
<span>A. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.
</span>Which of the following could be said about ecological footprints? <u /> <u>Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.</u><u />
NOT:
b. Ecological footprints can't be used to determine carrying capacity.
C. Ecological footprints don't take into account resources needed to absorb and manage wastes.
<span>D. The average ecological footprints for various countries are nearly identical.</span>
Its inorganic as MgCO3 is contains no carbon more hydrogen which is a crutial component of all organic compounds
calcium,phosphorus,potassium,and sulfer