Mutations and sexual reproduction.
Mutations and sexual reproduction.
All living things require a source of energy.
glucose is the source of energy for all living things.
The sun
The sun
The Sun.
Food source variations.
DNA
The Sun :D
Basic source of variation in all organisms is mutation .
Glucose, which is a carbohydrate. Actually, the correct answer is ATP.
The sun and the sunlight are the main things for all living things.