Explanation:
The experimenter alters the independent variable with the hopes of collecting data about how the dependent variable changes in response.Other variables have to be controlled so that any changes of the dependent variable are attributed to the known independent variable.
Answer:there always living
Explanation:
Answer:
The answer was A
It's a Heterotroph
It's means they eat thing outside of themselves instead of producing their own food.
I believe it's correct
Explanation:
Chemicals in the water rise up through the water process and spread over the Earth.