Mineral oils and coolant from cars pollute the water and kill fish, frogs and other aquatic species. These substances can also harm the wildlife that eats those species.
Answer:
Option D
Explanation:
Option D is the best way of encoding ,as not only the tape plays Sacramento but Sacramento is the capital of California. It will also sound right in Darcy ears that Sacramento is the capital California ,as she plays it every night ,there is no way the brain won't capture it ,as every time she hears the word Sacramento, the thought that it is the capital of California will always ring in her heart. Yes option D is the best way of encoding such an event.
90, because 1 fits into 90, 90 times.
Answer:
1. True
2. Compression marks are left from an instrument which is pushed into a material capable which can pick up an impression.
Scraping marks are a result of a combination of pressure and sliding contact by the tool.
3. c) Marks of nails and pegs
Explanation:
Explanation:
1) These markings are specific, characteristic for a tool used. If they are examined under a microscope and the tool markings are compared to samples the object can be identified.
2) Compression marks can be found on shoes, tires and include bite mark and also impressions of a hammer on wood, to name a few.
Scraping marks result in microcopic striations to the surface upon which the tool was applied. Some examples include: screwdriver blade dragged accross a surface or a bullet scrape.
3) Apart from telling an investigator that a particular type of shoes was worn by a perpetrator, footwear can positively place the perpertrator at the scene of the crime. Each footwear is unique and the sole is different depending on the use and manner of walking. So, nails and pegs can idenitify a shoe.
