Bauxite does not have a specific composition. it's a mixture of hydrous aluminum oxides, aluminum hydroxides, clay materials, and insoluble materials such as, quartz, hematite, magnetite, siderite, and goethite
The abiotic environment consists of non-living things. So, rocks, temperature and water are part of the abiotic environment.
Its A. it prevents sperm from reaching the egg and fertilizing it.
...unless environmental changes occur. These probable environmental changes could influence the supply of food, the condition of shelter and the environment to sustain life and support the population.