Answer:
About composition of water and organisms that lives there.
Explanation:
scientists might be able to learn about the composition of seawater that was present millions of years ago if we study those stones that comes in contact to that ancient seawater because the traces of particles still present on it. This study provides valuable information about ancient times of earth and its natural resources. These rocks also provides animals that were present in that sea water at that time.
Answer:
The correct answer is delirium.
Explanation:
An unexpected variation in the brain, which leads to emotional disruption and mental confusion is known as delirium. It makes an individual difficult to remember, sleep, think, to pay attention, and several other consequences. One might experience delirium post-surgery, at the time of alcohol withdrawal, or with dementia.
However, the condition is generally impermanent and can be cured efficiently. Delirium influences the emotions, mind, sleep patterns, and control of muscles. One may find it tough to concentrate or feel confused regarding his or her locations. One may also move gradually or briskly than generally, and may even encounter with mood swings.
Thus, it can be concluded that in the given case of 8 year Jed, who had undergone surgery is not able to concentrate on anything and is feeling confused due to a condition known as delirium.

Last option: Preserve an ecosystem

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.
Water would move out of the cells of the microorganisms by osmosis and the cytoplasm would become dehydrated, killing the cells.
The brine is a hypertonic solution, thereby "pulling" the water out of the bacterial cells.
Answer:
The scientific method
Explanation:
1. Observation
2. Ask a question
3. Form hypothesis
4. Make a prediction of hypothesis
5. Test Prediction
6. Iterate: make new hypothesis or problems with found results.