Final answer:
Mammals have several characteristics that help them survive in different environments, such as hair or fur, mammary glands, endothermic metabolism, a four-chambered heart, and viviparity.
Step-by-step explanation:
Characteristics of mammals:
- Hair or fur: Provides insulation and protection.
- Mammary glands: Produce milk to nourish their young.
- Endothermic metabolism: Generate and maintain body heat.
- Four-chambered heart: Efficiently circulates oxygenated blood.
- Viviparity: Develop embryos internally.
How these characteristics allow mammals to survive in different environments:
For example, hair or fur helps mammals stay warm in cold environments, while also protecting their skin. The ability to produce milk allows mammalian mothers to provide essential nutrients to their young, increasing their chances of survival. Endothermic metabolism helps mammals maintain a relatively constant body temperature, allowing them to adapt to various climates. A four-chambered heart efficiently pumps oxygen-rich blood to different parts of the body, supporting high-energy activities. Viviparity enables mammals to protect their developing embryos inside their bodies, providing them with a controlled and secure environment.
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