Question

19. If the greenhouse effect is natural, then why is today's climate change a bad thing? Choose correct option.

1) A small increase in greenhouse gas concentration can have a large effect of increased warming.

2) Humans have altered a natural process and exaggerated changes that might normally occur over millions of Years.

3) Once released into the atmosphere, greenhouse gases remain potent for many years, making it difficult to
reverse the process.

4) Abrupt changes to the climate system may have unintended outcomes that may pose challenges forsocieties, like more extreme weather, spread of diseases, a decline in marine life, or an alteration of ocean
circulation patterns.

4) All of the above​

Answer 1

Answer:

4) All of the above

Explanation:

Answer 2

Answer:

1)a small increase in greenhouse gas concentration can have a large effect of increased warming