<span>Population growth is limited in ecosystems because of lack of resources. If there were unlimited resources, a population would grow exponentially.
For example, if a single bacterium were placed in a petri dish and was given unlimited resources, it would multiply to cover the entire world within several days.
Unfortunately, resources are limited, so populations are too.</span>
H2O is the correct answer :)
Density = mass/volume = 2000/4000 = 0.5 grams/cm3. Hope this hopes!
<span> </span><span>1. Alcohol(other)
3. Acid
5. Salt
</span>