It’s Cells because cells make up tissues
Answer:
Disadvantages
Primarily made from non-renewable sources including fossil fuel
Provide nutrients to plants but nothing to sustain soil
Chance of over fertilization, that may damage crop and entire soil ecosystem
Leaching and move to rivers and sea causing eutrophication
Repeated application may lead to toxic build up of arsenic, cadmium etc in soil that may be present in fruits and vegetables.
Advantages:
•rapid action
•Constituent ratios defined
Explanation:
Pre-Cambrian Era. Earth formed and became a planet 600-3,300 million years ago.
Paleozoic Era. Ancient life. Volcanoes and mount formed.
Mesozoic Era. Middle life (Industrial Ages, Evolution of human technology)
Cenozoic Era. Present life
A cell membrane is selectively permeable because it only allows particles to move across them due to different concentrations. Molecules move from areas of low concentration to high concentration.The cell needs to control what enters and leaves. It needs to keep somethings in and other things out. However, only the Selectively cells can enter and go out of the cell! This is why the selectively permeable membrane is permeable!
A cell membrane (the outer casing or inner casing in a plant cell) is selectively permeable because some materials can pass freely through the cell membrane while others cannot.
Answer: The Lipid bi-layer of the cellular membrane allows simple molecules to pass through. However, for certain proteins, a special transportation mode is needed.