The Centers for Disease Control
Sound waves are sent out buy the animal/or vessel using sonar and the animal/vessel uses the echo from the original Soundwave that was sent out to determine the distance and size of the object that it hit
I had to do this too when i was in middle school;
Number 1, I said that their are many local gyms and fitness centers, healthy restaurants, and clinics that help your health, and one way you can say that you are experienced with one of them is by going to a gym or eating at a certain place before, or even shopping at a clinic.
For number 2, you can motivate yourself past and distractions by staying positive, paying attention by putting more focus on what your working on, eliminating distractions like your cellphone or devices, or anything that is unnecessary for what you are working on, and not letting others in the classroom or work environment distract you.
Good luck, hope this helps!! :)
This is not really a question.
