ACCEPTABLE REASONS TO USE SICK LEAVE. You can use sick leave when: 1  You have a mental or physical illness, injury, or health condition; you need to get a medical diagnosis, care, or treatment of your mental or physical illness, injury, or condition; you need to get preventive medical care.
A structural adaptation is when an animal or a living thing is adapted to its environment by the way its body is built or shaped.Structural adaptations involve physical traits that can help an organism to survive in its environment.ehavioural adaptations are different from structural adaptations, and mean the way that an organism behaves which helps it to survive in its environment.
Adaptations enable living organisms to cope with environmental stresses and pressures. One common form of physical adaptation is acclimatization. Acclimatization allows the organism to survive in a new environment. Adaptation can be structural or behavioral. Structural adaptations are special body parts of an organism that help it to survive in its natural habitat (e.g., skin color, shape, body covering). Behavioral adaptations are special ways a particular organism behaves to survive in its natural habitat.