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Old pesticides, such as DDT, were typically broad-spectrum chemicals that remained in the environment for long periods of time, causing harm to non-target species and the ecosystem. Modern pesticides are designed to be more specific in their target, with reduced persistence in the environment and lower toxicity to non-target organisms. Additionally, modern pesticides often undergo more rigorous testing for safety and environmental impact before being approved for use.

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What is the difference between the soap that was made in old times and modern soap?

When soaps and other man-made cleaning solutions were first invented, fatty bases were usually derived from animals such as pigs, horses or cows...The acids and chemicals located in the fats did an adamant job of cleansing. Although slightly similar methods are still used today, more advanced techniques are used in the composition and production of modern soaps or cleaners...


Is there a difference between a 13 year olds urine and a 18 year olds urine?

There should be no difference in the color or amount of urine for teens or adults. Urine should be a clear yellow to light amber color. If it is darker, the person has probably not had enough fluids.


What are some toxic objects?

Some toxic objects include poisonous chemicals (e.g., cleaning products, pesticides), lead-based items (e.g., old paint, certain toys), and electronic waste (e.g., batteries, old gadgets). It is important to handle and dispose of these objects properly to prevent harm to humans and the environment.


Can a lab tell the difference between an 11 year olds urine and a 17 year olds urine?

yes. the nose of a lab can tell the different between the pee coming from an old human and a young one because of the warmness, coldness. it can tell if its warm like the beer it just had or cold like ice cream like he just had last night when he took it off the table from the 4 year old that went to the bath room.


What is the orginal name of gold?

The original name of gold is derived from the Old English word "geolu," which eventually became "gold" in modern English.

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