Is There Less Oxygen in the Winter Since Its Colder

The video explains the importance of photosynthesis in oxygen production, highlighting the roles of trees and phytoplankton. It discusses seasonal variations in photosynthesis, particularly during winter, and how these affect oxygen levels. The video also covers how scientists measure these changes and concludes that despite seasonal variations, oxygen levels remain stable due to the contributions of both land plants and oceanic phytoplankton.

What is the primary process by which trees and plants produce oxygen?

• Respiration

• Photosynthesis

• Transpiration

• Fermentation

Which organisms in the ocean are responsible for a significant portion of Earth's oxygen production?

• Phytoplankton

• Marine mammals

• Coral reefs

• Seaweed

How does warmer water affect the release of oxygen into the atmosphere?

• It allows oxygen to escape more easily

• It prevents oxygen from escaping

• It holds more dissolved oxygen

• It has no effect on oxygen release

What is the approximate decrease in oxygen levels during winter in the northern hemisphere?

• 0.1%

• 210,000 parts per million

• 1%

• 24 parts per million

Why is there less seasonal variation in oxygen levels in the southern hemisphere?

• More oceanic phytoplankton in the southern hemisphere

• More land masses in the northern hemisphere

• More land masses in the southern hemisphere

• More trees in the southern hemisphere