Answer:
Freshwater, Ocean Water, and Terrestrial.
Explanation:
These are the broadest 'three types of ecosystems' that come to mind.
Answer:
7.0 - 1.4 = 6.4
Explanation:
the pollution is increasing 1850 to1960 in a constant speed but from the year 1970 it start increasing very fastly
Answer:
x=16
y=121
Explanation:
first off you will solve for x so you set the two x equations equal and solve by subtracting 3x and adding 5 to both sides getting x=16 then you plug that value into the equation 4x-5 then take that from 180 and that y which is 121