Answer:
wastewater and fertilizer runoff
Step-by-step explanation:
Factors such as temperature, pH electrochemical (redox) potential, and the transparency of air and water can affect the chemical and physical characteristics of ecological systems. This are as a result of activities like climate change, water contamination, and changes in water runoff.
Wastewater and fertilizer runoff causes low amount of dissolved oxygen in water, which affect biological communities and cycling thereby resulting in chemical and physical states changes.
Answer:
10 mins
Step-by-step explanation:
60/360 = .166667 hours
take this answer an multiply by 60 min to get number of minutes
10 mins.
1. Mean.

2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:

so the variance:

and the standard deviation:

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