467 questions and answers in this section
Explain why beavers build dams?

Explain why beavers build dams?

Beavers build their dams mainly to create an effective physical barrier against predators like wolves or coyotes. By forming a sort of artificial lake around...

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Explain why some animal species produce pheromones to communicate.

Explain why some animal species produce pheromones to communicate.

Pheromones are chemical messengers produced by certain animals, released into the environment to communicate with their peers. They mainly serve to quickly convey simple yet...

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Explain why tadpoles transform into frogs?

Explain why tadpoles transform into frogs?

Amphibians have a life cycle with two distinct stages: an aquatic stage and a terrestrial stage. It all starts in the water, where the eggs...

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Explain why some regions are more prone to landslides?

Explain why some regions are more prone to landslides?

Some areas are naturally more fragile due to the type of rocks present. For example, terrains composed of clays, or soft rocks like marl, quickly...

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Explain why hermit crabs change shells regularly?

Explain why hermit crabs change shells regularly?

The hermit crab has a soft and fragile abdomen, completely lacking a protective shell. That is why it takes refuge in shells borrowed from other...

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Explain why pelicans can swallow so many fish without choking?

Explain why pelicans can swallow so many fish without choking?

Pelicans have an expandable pouch under their beak made of very elastic skin that functions like a natural fishing net. This pouch can hold several...

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Explain why pheromones play a crucial role in the communication of social insects such as termites.

Explain why pheromones play a crucial role in the communication of social insects such as termites.

In termites, pheromones serve as true chemical messengers to organize the entire life of the colony. These chemical substances act like invisible signposts, allowing termites...

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Explain why killer whales hunt in groups?

Explain why killer whales hunt in groups?

Orcas hunt together like a true strike team. Generally, each has their role: some encircle, others drive the prey toward an ambush, and the strongest...

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Explain why pandas are black and white?

Explain why pandas are black and white?

The black and white coloration of the giant panda mainly comes from a genetic phenomenon controlled by several specific genes involved in pigmentation. The distribution...

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Explain why spiders have eight legs?

Explain why spiders have eight legs?

Spiders are part of the arachnids, a group of arthropods that appeared about 400 million years ago. Their common ancestor was probably aquatic, related to...

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