What happens when we mix cornstarch and water ? why does that happen? ☺

applying pressure to the mixture increases its viscosity or thickness in other words. it will make a goo and if you tap on it while its on a surface than it will feel hard because it forces the cornstarch particles together. 

Leaves specifically the gas exchange between plants and the environment. while plants undergo photosynthesis, they also partake in cellular respiration. respiration is the process that happens in the leaves of plants.