A phenomenon, in the scientific context, is an observable event that can range from a seasonal hazard to a technological issue. For a scientist, a phenomenon is an observable event.
Cell transport is useful because it's, essentially, the movement of cells across the blood/veins. Active transport uses energy, while passive transport does not.
Answer:
The scientific method
Explanation:
1. Observation
2. Ask a question
3. Form hypothesis
4. Make a prediction of hypothesis
5. Test Prediction
6. Iterate: make new hypothesis or problems with found results.
To gather data or information or to observe. HOPE THIS HELPS!! IF SOO LET ME KNOOW