Answer:
d.−1.4, 3.4
Explanation:
Given

Required
Determine the zeros
The best way to solve this is to apply the graphical method.
First, we plot the graph of: 
<em>See attachment </em>
Next, we write out all values of x when the line crosses the y-axis.
From the attached graph, the points are (approximately):


Option (d) is the closest to the above values.
<em>Hence, the zeros are: -1.4 and 3.4</em>
Answer:Immediate threats to conservation of biodiversity
Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
Flooding can affect rivers because river flooding causes things to be picked up from the streets and pulled back into the water. So It affects the water quality and if anything dangerous to the fish and water life gets in the water it will mess up their life system. Hope this helped a little bit. :)