Question

swbat explain how carbon dioxide moves between earths spheres and how rising co₂ levels in the atmosphere affect ocean chemistry, marine life, and human communities, by analyzing real - world ocean data.
criteria for success
● i can trace the movement of carbon between the atmosphere and the hydrosphere.
● i can interpret line graphs of ocean co₂ and ph changes over time.
● i can explain how ocean acidification affects organisms and ecosystems.
● i can connect changes in the carbon cycle to human activities and impacts.
success checklist
□ do now (5 mins)
□ part 1 group reading (15 mins)
□ part 2 four corners
□ part 3 mapping and graphing activity (10 mins)
□ part 4: reflection questions (10 mins)
□ exit ticket (stamp your learning)
do now: your notebook
5 mins
after watching the ocean: earths co₂ sponge ▶ the ocean: earths co₂ sponge, write a quick response to this question
what role do oceans play in regulating carbon dioxide, and how might that process affect ocean life?
big learning (quick think, write, and share)
(15 min)
take out your notebook and copy this weeks learning objective. then, reflect and answer these questions:
a) thinking and writing

1. what do you think we are learning?

Explanation:

Oceans act as a carbon - sink, absorbing carbon dioxide from the atmosphere. This absorption can lead to ocean acidification as the extra carbon dioxide reacts with water to form carbonic acid, which lowers the ocean's pH. Lower pH levels can harm marine organisms with calcium - carbonate shells or skeletons like corals, mollusks, and some plankton. This, in turn, can disrupt entire marine ecosystems and have cascading effects on human communities that rely on marine resources.

Answer:

Oceans absorb carbon dioxide from the atmosphere, acting as a carbon - sink. This can cause ocean acidification which harms marine organisms with calcium - carbonate structures and disrupts marine ecosystems, affecting human communities that depend on the ocean.