How can humans mitigate society's and nature's harmful effects on Earth's Water?

Use public transport, cycle or walk instead of using a car. Use facilities and trips run by local people whenever possible. Don't be tempted to touch wildlife and disturb habitats whether on land, at the coast or under water

Explanation:

answer; ///(b) it is composed of four protein chains and four heme groups;

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"