Understanding Concepts from the Video Tutorial

What is one potential downside of building your own house?

• It requires no effort.

• It may take decades to complete.

• It guarantees a perfect design.

• It always saves money.

Why do leaves appear green most of the time?

• Due to the presence of orange pigments.

• Because of the high amount of chlorophyll.

• Because they reflect blue light.

• Due to the absence of sunlight.

How does salt make food taste better?

• By making food sour.

• By suppressing bitterness.

• By enhancing bitterness.

• By adding sweetness.

What is one reason humans have evolved to like salt?

• It makes food bitter.

• It helps maintain blood pressure.

• It is unnecessary for survival.

• It is naturally sweet.

What is a health risk associated with prolonged sitting?

• Compressed blood vessels.

• Improved blood circulation.

• Enhanced muscle growth.

• Increased nerve impulses.

What condition causes some people to sweat excessively?

• Hyperhidrosis

• Hypertension

• Hypothermia

• Hyperactivity

What is unique about a giraffe's heart?

• It is smaller than a human heart.

• It beats only when resting.

• It pumps blood at a lower pressure.

• It can weigh up to 25 pounds.

Why are flies difficult to swat?

• They are too small.

• They are too fast.

• They see in slow motion.

• They are invisible.

Why doesn't it go dark when we blink?

• We never actually blink.

• Our brain ignores the darkness.

• We have transparent eyelids.

• Our eyes are always open.

Why can't human babies walk at birth?

• They are too lazy.

• Their brains are not fully developed.

• Their feet are too small.

• They prefer crawling.