C. 6.81x10^-4
It is negative 4 because the 6 is 4 digits away from the first 0.
Scientific notation has one number and then the decimal place so it can not be A or E.
The answer to the question above is D. Mushroom.
Mushroom is not the abiotic factor in ecosystem. Rain, shade, and sunlight are an abiotic factor in ecosystem. An abiotic factor is a nonliving factor in the ecosystem that affects those living organism in the ecosystem.
If citizens didn’t meet their duties the economy and judicial system would change terribly
A mid-ocean ridge<span> </span>oceanic ridge<span> is an underwater mountain range, formed by plate tectonics</span>
