The answer is C) cause a decrease in growth rate!
I hope it helps
Answer:the answer is simple when the lava clears up the is rocks left and the rocks contain lichen or moss the lichen and moss speed up the process by a little a are like a little decomposer and when it decomposes dirt start to come together and grass and trees start to form in wich bring wildlife attracted to that place
Explanation:i dunno
1. The heart muscle cells need plenty of oxygen and nutrients so it needs its own blood supply.
2. The heart needs to have a blood supply to get ride of wastes.
Hope that helps. -UF aka Nadia