Primary succession is beginning.
Primary succession is when a disaster destroys the environment, leaving no soil and no organisms left. This is evident by the bare rock. Lichens are a pioneer species, meaning they are one of the first organisms that show up.
Answer:
$220
Explanation:
For Mowing:
Revenue: $1,200
Additional cost: $(100)
Transportation cost : $(50)
Net Income : $1050
For Painting:
Revenue: $1,400
Additional cost: $(80)
Transportation cost : $(50)
Net Income : $1270
Incremental Net income = $1270 - $1050
= $220
Increase in blood volume is the result of increased salt content if the blood.Increase in content of salt means an increase in sodium concentration in the blood stream.This cause water to enter the blood vessels by osmosis.This water led to an increase in volume of blood.
