Evolution of Fishes and Support Strategies

The video explains how land-dwelling creatures evolved from fish with limbs, focusing on the distinction between ray-finned and lobe-finned fishes. It highlights the mass extinction that allowed ray-finned fishes to dominate the seas, while lobe-finned survivors eventually led to land vertebrates. The video also encourages support for MinuteEarth through Patreon.

What percentage of today's fish have delicate fins?

• Exactly 90%

• Less than 50%

• Over 99%

• About 75%

What are the two groups that bony fishes evolved into?

• Cartilaginous and bony fishes

• Ray-finned and lobe-finned fishes

• Sharks and rays

• Amphibians and reptiles

What event caused the decline of lobe-finned fishes?

• A sudden drop in sea levels

• A meteor impact

• A mass extinction due to climate fluctuations

• A volcanic eruption

Which group of fishes took over the seas after the mass extinction?

• Lobe-finned fishes

• Ray-finned fishes

• Cartilaginous fishes

• Jawless fishes

What did the surviving lobe-finned fishes eventually evolve into?

• Invertebrates

• Marine mammals

• Land-dwelling creatures

• Birds

What is one way viewers can support MinuteEarth?

• By attending live events

• By making a pledge on Patreon

• By subscribing to the channel

• By buying merchandise

What is encouraged if viewers cannot support on Patreon?

• To delete their account

• To unsubscribe from the channel

• To share the content with others

• To ignore the channel