Hey there!
In a scientific experiment, there are three types of variables: dependent, independent, and control.
Independent variables are the variables that are changed and doesn't depend on another.
Dependent variables are the variables that are depending on the independent variable. When the independent variable changes, it affects the dependent variable.
Control variables are the variables that are kept the same throughout the entire experiment. These don't change at all.
Hope this helps!
Answer:
Some chemicals react badly to your body, causing a chain of results leading to diseases.
Explanation:
Uranus's atmosphere is mostly composed of hydrogen and helium
Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.
Hope this helped!
Answer:
The immune system
Explanation:
It defends from outside pathogens that may get into the body