It is important that we look at the number of species, not the number of individual organisms when figuring out the biotic index. Explain a situation where a stream could have a lot of individual organisms, but a low biotic index

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

sorry i got nothing

step-by-step explanation:

do it yourself this is easy

step-by-step explanation: