Question

Human activities have altered the natural carbon cycle over the past 300 years by…”

⭐HINT: Think "big picture" - what's the major change you see between these two time periods? Focus on one main idea that connects human activities to carbon cycle changes.

(1 point)
Responses

significantly increasing the amount of carbon dioxide in the atmosphere

significantly reducing the amount of carbon dioxide in the atmosphere

changing how effectively the ocean absorbs carbon dioxide

Answer 1

significantly increasing the amount of carbon dioxide in the atmosphere