State two characteristics of a mixture. Define the term variation. Give two causes of variation. What is a diatomic molecule? Give two examples of a diatomic molecule. What is biotechnology?

here are the solutions to the questions:

2. State two characteristics of a mixture.

1. The components of a mixture are not chemically bonded together.
2. The components of a mixture retain their individual properties.

3. (a) Define the term variation.
Variation refers to the differences or dissimilarities observed among individuals of the same species. These differences can be in physical traits, physiological characteristics, or behaviors.

3. (b) Give two causes of variation.

1. Genetic factors, such as mutations and gene recombination during sexual reproduction.
2. Environmental factors, including diet, climate, and lifestyle.

4. (a) What is a diatomic molecule?
A diatomic molecule is a molecule composed of only two atoms, which can be of the same or different chemical elements.

4. (b) Give two examples of a diatomic molecule.

1. Oxygen ($\text{O}_2$)
2. Nitrogen ($\text{N}_2$)

5. (a) What is biotechnology?
Biotechnology is the application of biological organisms, systems, or processes to develop or create products and technologies for specific uses, often in fields like medicine, agriculture, and industry.