ANSWER: 16.
A negative cancels out another negative. Therefore 5+11=16
The answer is c. Living organisms modify their environment a little at a time.
The purpose of succession is for an ecosystem to reach balance state right after it is formed or after it is disturbed by man or some disasters. It will increase biodiversity and help to prevent the desertification. Living organisms modify environment a little at a time. By modifying it, they make the environment more suitable for the new species to enter the community.
-x+2y
You have 3x+y and you need to make it 2x+3y
The difference between 3x and 2x is 1x(x)
And the difference between y and 3y is 2y
For the x you have to minus x from 3x to get 2x,(3x-x=2x)
For the y you have to add 2y to y to get 3y,(y+2y=3y)
Now add them
=3x+y+-x+2y=2x+3y
Therefore you add -x+2y
Answer:
Step-by-step explanation:
you just graph it
Prime numbers are those with only two factors: one and themselves. The prime numbers between 21 and 30 are 23 and 29.