Перепишите следующие предложения. Подчеркните в них причастие настоящего времени и определите его функцию:
1)  Atmospheric conditions influencing the properties of polymer materials are light, moisture and temperature.
2)  While making an experiment students put down the necessary data.
3)  Using modern methods of control the engineers tested new mining equipment.
4)  Some gases are always trying to expand.
5)  How can the kinetic energy of moving body be expressed?