Marine Ecosystems and Population Insights

The video discusses air pollution in India, highlighting its severe impact on health and the environment, and the government's efforts to address it. It then shifts to the sunflower sea star, explaining its ecological importance and the mysterious decline in its population. Conservation efforts are underway to restore its numbers. The video concludes with a heartwarming story about an unexpected Thanksgiving friendship.

What is the estimated population of India, making it the most populated nation?

• 1.5 billion

• 1.7 billion

• 1.3 billion

• 1.1 billion

How many years longer could New Delhi residents live if pollution levels met UN guidelines?

• 10 years

• 20 years

• 15 years

• 5 years

Which of the following is NOT a factor contributing to air pollution in India?

• Solar energy

• Crop burning

• Industrial pollution

• Car emissions

What is the world's largest known type of sea star?

• Giant spine star

• Necklace starfish

• Sunflower star

• Royal starfish

What is one possible reason for the mysterious die-off of sunflower sea stars?

• Pollution

• Lack of food

• Overfishing

• Ocean warming events

What role do sunflower stars play in the marine ecosystem?

• They clean the ocean floor

• They are a major source of oxygen

• They help maintain a diverse ecosystem

• They are a primary food source for sharks

What is the main reason for the decline of kelp forests in California?

• Loss of sunflower stars

• Pollution

• Climate change

• Overfishing

In what year did the unexpected friendship between Wanda and Jamal begin?

• 2014

• 2015

• 2016

• 2017

What was the initial reason Wanda Dench texted Jamal Hinton?

• To send a holiday greeting

• To ask for a favor

• To inform him about Thanksgiving dinner

• To invite him to a party

How many Thanksgivings have Wanda and Jamal celebrated together as of the story?

• Five

• Six

• Seven

• Four