Answer: dog food brand
Explanation: it doesn’t depend on weight of dog, type of dog, etc.
Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
Answer:
An experimental group is a group that receives the variable being tested in an experiment. The control group is the group in an experiment that does not receive the variable you are testing.
Explanation:
Control group, the standard to which comparisons are made in an experiment. ... A typical use of a control group is in an experiment in which the effect of a treatment is unknown and comparisons between the control group and the experimental group are used to measure the effect of the treatment.
The control group would be the group you keep control as you would not change anything about it throughout the course of the experiment. The experimental group you would give the experimental drug to.
There's a great picture that I attached below that is a great representation
