For each cycle, explain how humans actions have altered or disrupted the cycle
water cycle:
carbon cycle:
nitrogen cycle:

Water Cycle- we interrupt the flow of water by withdrawal (taking the water out of its natural system to carry out industrial processes, irrigation and to provide drinking water. Discharging also affects the flow of water, whether intentionally or not. By adding chemicals to the water, it pollutes the water and can cause damage not only to organisms but to the environment.

Carbon Cycle - humans greatly affect carbon cycle by immense deforestation activity, which increase the carbon dioxide content in the atmosphere and also the burning of coals, which also increase the carbon content in the surrounding which will result to global warming.

Nitrogen Cycle - one of the major influences of humans in the nitrogen cycle is evident in agriculture. Farmers attempt to increase the availability of nitrogen to the land which is essential to the plants that is why they add nitrogen-containing fertilizers.This results to the larger rate of nitrogen input than occurs naturally through nitrogen fixation processes.

The answer is 1.82 j/g°c                  

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .