تكليف المقارنة بين شروح كتاب التوحيد
1- الرجوع إلى كتاب التوحيد، وقراءة: ((باب ما جاء أن الغلو في قبور الصالحين يصيرها أوثانًا تعبد من دون الله))
2- الرجوع إلى عدد 3 شروح لكتاب التوحيد، وهي: (فتح المجيد، لعبدالرحمن بن حسن، القول المفيد لابن عثيمين، التمهيد، لصالح آل الشيخ)، وعمل التالي:
أ- مقارنة بين الثلاث كتب في طريقة شرح هذه الباب، من حيث:
- التوسع في الشرح
- وضوح الشرح
- كثرة الفوائد
ب-  ذكر 3 فوائد من الباب (فائدة من كل شرح)، مع بيان اسم الشرح قبل ذكر الفائدة.

1. Fermentation biochemistry
2. Technology of enhancing growth of microorganisms
3. Biological reactors
4. Kinetics of biotechnology
5. Enzymes and immobilized microbial cells
6. Use of biotechnology in the production of biomasses and biological materials
7. Use of biotechnology in waste treatment and disposal
8. Advances in biotechnology.

The SiO2 synthesized in bulk form, adopting the conventional methods for application in food industry applications, may also contain nano-sized particles. On account of the unique physico-chemical properties, the SiO2 particulates, such as size and shape, cause metabolic toxicity in cells.

The use of engineered nanoparticles (NPs) across multiple fields and applications has rapidly increased over the last decade owing to their unusual properties. However, there is an increased need in understanding their toxicological effect on human health. Particularly, iron oxide (Fe3O4) have been used in various sectors, including biomedical, food, and agriculture, but the current understanding of their impact on human health is inadequate.

Titanium dioxide (TiO2) is a common additive in many foods, pigments, personal care products, and other consumer products used in daily life. Despite the widespread use of nanoscale TiO2 and composites of nanoscale TiO2 in the food industry, there is a serious lack of awareness of the toxicity of TiO2 nanoparticles (NPs) among consumers and manufacturers.

Food grade TiO2 (E171) is a synthetic additive, and widely used as a coloring agent in many foods, pharmaceutical and personal care products. A few reports have highlighted that insoluble particulates (less than 200 nm) of food grade TiO2 are found in many foods and confectionary products. However, information regarding the physico-chemical properties (i.e., size and shape)-based food grade TiO2nanotoxicity related human health issues are limited.

Titanium dioxide (E171) and silicon dioxide (E551) are common additives found in food products, personal-care products, and many other consumer products used in daily life. Recent studies have reported that these food additives (manufactured E171 and E551) contain nanosized particles of less than 100 nm. However, the particle size distribution and morphology of added TiO2 and SiO2 particles are not typically stated on the package label.

Aluminum oxide nanoparticles (Al2O3-NPs) are important ceramic materials that have been used in a variety of commercial and industrial applications. However, the impact of acute and chronic exposure to Al2O3-NPs on the environment and on human health has not been well studied.