Organisms need energy to conduct essential life activities. Basically, energy is essential to every organisms because it is their source of power to get food and to reproduce. Without it, organisms would not function properly and will soon die.
The statement above is TRUE.
Depressants has many negative effects, these include depression, chronic fatigue, breathing difficulties, sleep problems, etc.
Long time use of depressants can affect the immune system, weakening it considerably and making the body susceptible to many diseases including cancer.
Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A.
They are all formed from data, predictions and observations.
