Nails are made of iron because, iron is strong and sturdy; although nail rust when it undergoes oxidation when expose to water but it is not explosive.
Barium and phosphorus are not suitable for nail making because of their properties.
Barium is an element which reacts with virtually all non metals, forming poisonous products which are dangerous to health and to the environment. It also reacts explosively with water.
Phosphorus is not found in its pure form in nature, it conducts electricity and it is combustible in nature.<span />
Primary succession will occur in (D) a landscape without vegetation or soil. This type of succession occurs in areas where the existing landscape may at one point been destroyed, such as a lava flow area that has destroyed all existing life and soil properties during the volcanic eruption.
Answer:
If I’m correct it’s O cosmic background radiation
Explanation:
Because if you do you would be helping nature
The cell theory includes that D) All living things are made up of cells.
The cell theory states that all living things are made up of cells, that all cells come from previously existing cells, and that the cell is the simplest unit of life and is the foundation on which more complicated levels are built upon.
All living things are made up of cells, and cells are often classified as the simplest unit of life (the least organized level which still constitutes life). All of the other levels are built upon the cell, including tissues, organs, organisms, and even ecosystems.
Hope this helps!