An experiment or survey must be controlled in order to receive accurate results.
In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
Scientists classify living things to organize and make sense of the incredible diversity of life. Classification also helps us understand how living things are related to each other.
Answer:
Cells are arranged to form different types of TISSUE, which then work to perform specific jobs for the well-being of the animal.
Hip. the shoulder and hip form the only ball an socket joints in the body.
