There are many different ways to approach; it is the scientist own form of thinking.
They are warned about contracting Toxoplasma.
Answer:
They are the building blocks of life.
Explanation:
They are so called the building blocks of life because they make up everything
Light reaction which is absorbing energy from the sun
Autotrophs since they are self-feeders and make their own food instead of relying on others (the opposite is heterotrophs)
