video 1. how much can the airplane cable hold and how does the cable hold down the airplane and how much time does the airplane stop.
video 2. what little insect do they use for medicine and what is the material they use from the insect for a cancer drug
video 3. how many houses are being fueled by fuel. give me two examples of what they use trash for.
video 4. what animals skin can help us to make stuff more smart.
No comments:
Post a Comment