We will be discussing the biology materials from grade 7 until 9th grade. Sit back and enjoy listening.
Materials: 
7th grade:
Characteristics of living things
Monocots and Dicots
Vertebrate and invertebrate
Food chain
8th grade:
Food test
Nephron structure
Circulatory system
Artery vs veins
Respiratory system
Photosynthesis
9th grade:
Spermatogenesis and oogenesis
Menstrual cycle
Male & female reproductive system
Mendel's law of inheritance
Biotechnology