The answer is bone composition. While the other answers are also techniques used to compare bones, the primary techniques would be bone composition. This is because bones of different species vary greatly in the composition of content such as collagen, extractable proteins, and ash content.
Answer:
Organisms on the island would migrate to a larger island.
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Answer:
The presence of high temperature and pressure, soil as a medium and also microbes are the factors that determine if animals and plants will form fossils.
Explanation:
As plants as well as animals dies in moist condition, and when buried inside the mud or silt. The soft tissues present starts degrading leaving behind the hard bones and also shells. Over the period of time various layers gets formed over it. As a result of high pressure and temperature fossils are formed. In case of animals the mineralized shell i.e. trilobite and ammonite form the fossils. It takes around 10,000 years for the formation of fossils the time period is minimum it may vary according to the species.
Answer:
Gram negative bacteria don't retain purple color as they contain thin cell wall which is composed of peptidoglycans present between inner cytoplasmic cell membrane and bacterial outer membrane.
Explanation:
They contain some characters like-
- The outer membrane is important as it protects them from antibiotics,detergents that damages the peptidoglycans of cell membrane.
- The outer membrane is composed of lipopolysaccharide that secrets lipid A component which causes toxic reaction.
- This toxic reaction creates different health hazards like high fever,increase respiratory rate,low blood pressure etc.
- Braun's lipoprotein present between outer membrane and peptidoglycans by a covalent bond.
