This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
You can make an transpiration measuring device known as potometer 
Bio plastic or Eco friendly Plastic
Plastic with milk is the best model which is biodegradable in earth and which need is more on now a days
1.Take some milk in a beaker and add some vinegar to it
2. Make sure that we can see the clumps in milk
3. Now take a cloth and place those clumps in it and press it by covering such that the watery part will goes out
4. Now keep those clumps under the sun and after getting dry they act as plastic