Experiment: Click Reset. Change the Number of people to 15. Click Play, and record how long it takes to infect five people. Repeat this four times for a total of 5 trials, and calculate
the mean time. Repeat the experiment when there are 25 people and 35 people in the room.
Time to infect five people, 5 trials (h)
Mean time (h)
Number of people
15
25
35
Interpret: Study the data you collected. What trend do you see in the data, and how would
you explain it?

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

the tricuspid valve is present between right atrium and right ventricle

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.