There are currently
22 active volcanoes in Luzon
428 in Visayas
and 20 in mindanao
In any ecosystem, there are factors to control populations.
In a stream, the predators of a certain organism will help keep populations checked. Moreover, the limited resources, such as space and food, will keep the population from growing out of control.
An independent variable is something a Scientist messes with like baking soda and vinegar the independent variable is the baking soda and vinegar and the dependant variable is the explosion
Patella is the word you are looking for
Prokaryotes do not contain membrane, and eukaryotes do contain membrane.