Cells are the basic fundamental and functional unit of life. They are also known as building blocks. It is cell which combines to form tissues and tissues to organ and ogans to organ system and organ systems to organism. Similarly bricks combine to form walls and walls to building. They are different as cells form living organism and bricks form non living organism. Cell can divide but a brick cannot divide. The constituents of cell are its cell organelles and the constituents of brick are soil etc.
The property or characteristic of cellular membrane to allow certain substances to pass through the cell is known as selective permeability. The movement of molecules and ions across the cell can be active or passive.
Since the country has a smaller area and a large amount of people (although smaller than Australia) the ratio of land to people in New Zealand is much larger than the ration of land to people in Australia.