They usually mean human-made structures such as bridges. This book looks at natural structures such as plants, animal bodies, mountains, caves, rock formations, and icebergs, the materials from which they are made, and their colors, shapes, and textures.

Nature provides us with many structures as well. Trees are structures, even a bee hive is a structure. Make a list of three more natural structures and three more man-made structures.

Made-made structures are made by humans, whereas natural structures are structures that occur naturally. In the pictures above, the skeleton, eggs and snail shell are all natural structures.

Answer:

• Clothes.
• Home.
• Buildings.
• Furniture.
• Car.
• Books.
• Bridges.
• Hospital.

Natural materials are sourced directly from nature — cotton is picked from cotton plants, corn harvested from corn fields and granite is mined from quarries. Man-made materials, on the other hand, go through rigorous processing to alter the material so that it suits its intended purpose.

When humans use natural things to make something new that provides utility and value to our lives, it is called human-made resources. And, because humans have the skills, intelligence, and knowledge, and use technology to transform a natural resource into usable and valuable things, they themselves become a resource.

Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil.

Plastics could protect the natural world from the destructive forces of human need. The creation of new materials also helped free people from the social and economic constraints imposed by the scarcity of natural resources. Inexpensive celluloid made material wealth more widespread and obtainable.

A key breakthrough came in 1907, when Belgian-American chemist Leo Baekeland created Bakelite, the first real synthetic, mass-produced plastic.

Sand (natural) being heated and made into glass (man made). The silicon chip inside this computer is made from sand. Wood (natural) being made into paper (man-made)….Well done. Tin is a natural metal.

A man made method, utilizing particles bombardment technique, is used to produce Gold and Platinum. These high energy Lithium particles are used to bombard Osmium element. Then elements Lithium and Osmium undergo cold fusion process that they are combined to produce element Gold.

Scientists believe all the gold on Earth formed in supernovae and neutron star collisions that occurred before the solar system formed. In these events, gold formed during the r-process. Gold sank to the Earth’s core during the planet’s formation. It’s only accessible today because of asteroid bombardment.

Synthetic oil is a man-made lubricant that consists of artificially made chemical compounds. Synthetic oils are typically created from chemically modified materials such as petroleum components, but the base material is almost always distilled crude oil.

No. Switching brands is not harmful to your engine as long as you choose an oil marked with the API donut of the same level, e.g., API SN. You may give up enhanced performance if you switch from synthetic or high mileage to conventional oil. MYTH: When motor oil becomes dark, that means it’s time to change it.

Mobil is one of the best synthetic oils that you can get in the market. It is hailed for its efficiency and guaranteed durability for your engine. Mobil 1 comes with SuperSyn Technology which guarantees more protection. The technology enables the synthetic oil to provide optimal protection in extreme temperatures.

Valvoline is better in some areas, the same as Castrol. For example, it has the best conventional motorcycle oil suitable for cruisers. On the other hand, Castrol has products that guarantee the engine’s long life, courtesy of Magnatec technology.

But we have tried our best to give an honest review of this comparison – Castrol Edge VS Pennzoil Platinum….Castrol Edge VS Pennzoil Platinum.

Castrol EDGE has a more advanced technology with fluid titanium that provides superior engine wear protection. Castrol GTX MAGNATEC has intelligent molecules that cling to critical engine parts like a magnet, providing an extra layer of protection from the start and throughout warm-up that won’t drain to the sump.

Castrol EDGE, an advanced full synthetic 5W-30 motor oil, is Castrol’s strongest oil and a great option for those who want the very best for their car. Castrol GTX MAGNATEC is a premium full synthetic 5W-30 that offers superior wear protection.