Answer:
1-if u are answering light waves question , then the answer is translucent mirror or objects
2- Oxygen
3- compass
Answer:
Doing experiments by scientific procedures is advantageous and helpful.
Explanation:
The scientific procedure should be followed while performing a experiment as it has many advantages like:
- Working in safe environment: Performing a experiment by scientific procedure ensures the safety of the experimenter.
- It reduces the chances of mistakes: The proper availability of the scientific equipment helps in reduction of the chances of the mistakes.
- A sequence of steps is followed: A proper sequence of steps is followed to perform a experiment step by step. Performing experiment without scientific procedure may cause the experimenter to forgot a step.
- More Accuracy: The readings of the experiment is more accurate by doing experiment by scientifically.
- Chemical changes can be observed: The physical and chemical changes can be observed and can be measured by the lab equipment to perform more accurately.
- less chance of risks: Performing in the safe scientific environment and using proper safety equipment reduces the chances of risks to the experimenter.
Answer:
A
Explanation:
it can be help to remove mood swing
Answer:
I am pretty sure that I know what Anna is working on, given that she wants to find the patterns of demographic variation, is population structure. This structure deals with variations in age, gender, and other qualities of a population, and I believe that is what she wants to find out. So the answer to your question would be that population structures are the patterns of demographic variation.
