The element is Carbon 3. What are two natural processes which have the greatest influence on the element’s concentrations on Earth and how do they function?

4. What are the two largest exchange pools and reservoirs (possibly called a “sink” on some websites) for the element?

7. What laws or restrictions exist to mitigate anthropogenic impact on the cycle and connect it to the importance for the regulation? If there are none, create one and explain why it is important to regulate.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

c. 75.7

i think that is the right

4d^55s^1 ( third choice)