d) (i), (ii), (iii) and (iv)
Respiration (exchange of gases and metabolism), reproduction (to produce young ones of the same type), adaptation ( to develop features to survive and thrive in an environment), excretion (removal of wastes and toxins from the body) are essential for a living being to survive and hence are the characteristics of living beings
Characteristics of Living Things
- Living things are made up of a cells
- They obtain and use energy to survive.
- A unique ability to reproduce, ability to grow, ability to metabolize, ability to respond to stimuli, ability to adapt to the environment, ability to move and last but not the least an ability to respire.