Environmental systems
true/false
6.
a significant digit provides information about the number.
7.
leading zeros are always significant.
a number other than zero is always significant.
9.
when rounding a number, express it as an exact value.
10.
when rounding to a certain place, look at the number after that place.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

the pseudoscience are like beliefs, theories, or like practices that are considered scientific