Independent Variable is what you change in an experiment. A Dependent Variable is what you’re trying to find out. Constants are what you keep that same. Control Group is the standards to which comparisons are made.
Answer:
They help to stop harmful germs from entering the body
Explanation:
- The skin can prevent bacteria and microorganisms from entering the body (unless it is damaged)
- Mucous membranes line the mouth and nose and are coated with secretions that fight microorganisms and harmful bacteria
- Tears help to clear debris from the eye to prevent infection
Answer:
It is circulatory system and the digestive system.
Explanation:
Answer:
That's correct most birds have diffrent shaped beaks for diffrent reasons for example some birds can tweezer beaks which helps to dig into the worm holes to get worms or help to drill into trees
Explanation:
Answer:
theories, models, and laws
Explanation:
