HabitatThe specific natural environment or home where an animal species lives, grows, and finds the necessary resources to survive. For example, the savanna is the natural habitat of giraffes and zebras, providing them with grass and tall trees.
MammalA class of warm-blooded vertebrate animals characterized by having hair or fur and females that secrete milk for nourishing their young. Examples from the text include elephants, lions, gorillas, and whales.
ReptileA class of cold-blooded, air-breathing vertebrates that usually have scaly skin and lay eggs on land. Snakes and crocodiles are prominent examples mentioned in the unit.
ColonyA large group of the same species of animals, particularly birds or marine mammals, that live and nest closely together for survival and warmth. Penguins live in colonies to protect themselves from the extreme cold of Antarctica.
WaddleA specific way of walking with short steps while swaying clumsily from side to side. This is the characteristic movement style of penguins when they travel across ice and snow.
FlippersFlat, paddle-like forelimbs used by wingless aquatic birds like penguins and marine mammals for swimming and navigating through water. Penguins use their flippers to become highly efficient underwater hunters.
TusksVery long, pointed teeth that project outside the mouth of certain mammals, such as elephants. Elephants use their tusks for digging, clearing paths, and defense.
SavannaA rolling grassland scattered with shrubs and isolated trees, which can be found between the tropical rainforest and desert biomes. It serves as the primary habitat for large herbivores like giraffes and zebras.
ComparativeA grammatical form used to compare the differences between two objects, people, or animals. An example from the text is: 'A snake is faster than a gorilla.'
SuperlativeA grammatical form used to describe an object which is at the upper or lower limit of a quality among a group. An example from the text is: 'Whales are the largest animals on Earth.'
