What is a life cycle?
The stages or changes that an animal goes through.
Metamorphosis is another word for these changes.

Animals have a life cycle.

  • They are born,
  • they grow,
  • they reproduce,
  • and they die.

The four stages of the life cycle are:
birth, growth, reproduction, and death.

“The four needs of an animal”
What do animals need to survive?
Source | Harry Kindergarten Music

Classifying vertebrates and invertebrates
Source | FreeSchool

All living things perform three vital functions:

  • nutrition,
  • interaction,
  • and reproduction.

All living things perform three life processes:

  • nutrition,
  • interaction,
  • and reproduction.

Nutrition is essential for living things.
Food and drink provide vital nutrients for survival.
They provide the energy we need, too.

Living things interact with their environment.
A change in the environment is called a stimulus.
The reaction to a stimulus is called a response.

Reproduction allows living things to make new living things.
Reproduction is essential for the continuity of life.

The vital functions of living things
Nutrition, interaction, and reproduction.
Source | Happy Learning English

PEDROLEÓN.