Chimps choosing materials

Chimpanzees demonstrate expertise in selecting materials for various tasks. They use soft leaves for comfort, flexible stems to fish ants, and rigid stalks to mash palm cores. For cracking nuts, they choose rocks, showcasing their understanding of material properties. This knowledge significantly eases their daily activities.

What do chimpanzees use to make sitting on hard branches more comfortable?

• Ants

• Soft leaves

• Palm tree stalks

• Rocks

How do chimpanzees extract ants from their nests?

• By using palm tree stalks

• By using long, flexible leaf stems

• By using rocks

• By using their hands

What do chimpanzees use to soften the inner core of palm trees?

• Ants

• Strong, rigid stalks

• Rocks

• Soft leaves

Why can't chimpanzees use palm tree stalks to crack nuts?

• They are too short

• They are too soft

• They are too flexible

• They are too heavy

What challenge do chimpanzees face when using rocks to crack nuts?

• Finding a rock that is colorful

• Finding a rock that is small enough to handle

• Finding a rock that is big enough to carry

• Finding a rock that is the right size and weight