What is the difference between a semi-permeable membrane (parchment paper, cellophane paper, etc.) and a differentially permeable membrane (cell membrane)?

Landfills are waste disposal sites. they are often man-made depressions in the ground covered with a lining designed to prevent any leakage of waste materials. however, landfills can leak through the base resulting in negative impacts on the surrounding environments. what negative impact to the environment is caused by organic and inorganic constituents that are dissolved by rainfall in the landfills?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

What is one reason why transpiration is important in plants? question 19 options: it produces food from the sugar in the plant cells. it enables the flow of water out of the plant. it produces carbon dioxide in the leaves of the plant.