DEFINITIONS

DEFINITIONS AND KEY POINTS

TERMS DEFINITIONS Matter Anything that occupies space and               has mass is called Mass The amount of matter in an object is called Mass Element The     chemical      substances     that     in   ordinary     chemical reactions cannot break down into simpler units are called element.      

DEFINITIONS AND KEY POINTS

Write note on genetic unity. Discuss cell as a unit of life. Discuss evolutionary oneness and diversity of life. Write note on different energy sources. Discuss chlids as an example of study in biology. Describe scientific method. Multiple Choice Questions MCQs Four options are