Answer:
A, C, D
Step-by-step explanation:
You want to know which of these things organisms must do to survive in the world.
- obtain energy
- breathe oxygen
- produce offspring
- maintain structure
Survival
An organism will be said to survive if there are always members of the species alive, even if individuals of the species die. A species is defined by its physical structure. So, already we have two requirements:
- produce offspring
- maintain structure
Energy
The creation of structure and the production of offspring requires energy, meaning that a third requirement for survival is ...
Oxygen
Not every organism requires oxygen for survival. Some convert energy for their use without using oxygen. This is called anaerobic cellular respiration.