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.
70 right
the first significant number is the first one with a value higher than 0
Answer:
p = 2 or p = -15 the answer is A.
Step-by-step explanation:
Solve for p:
p^2 + 13 p - 30 = 0
The left hand side factors into a product with two terms:
(p - 2) (p + 15) = 0
Split into two equations:
p - 2 = 0 or p + 15 = 0
Add 2 to both sides:
p = 2 or p + 15 = 0
Subtract 15 from both sides:
Answer: p = 2 or p = -15
First, outside, inside last
so your answer is
7n²-3n-35n+15
Simplified = 7n² - 38n + 15
Answer = 7n² - 38n + 15
hope this helps
Answer:B
Step-by-step explanation:
65•7