Select your answer:
Topics:
CNA Introduction Plasmid Body Systems & Anatomical Terms Healthy Foundations Unintentional Injuries Consciousness and Sleep How the Eyes work Cell & Bond Health and The Environment Cell Theory and Microbiology Selective Breeding Cosmetology Anatomy Urinalysis/ Immunology Make up MS Neurology Body Fluids and Blood CellsOther quiz:
Tenses › ViewWhich tense is used to express that an action started in the past and is continuing till now?
A. present perfect
B. past perfect
C. past continuous
D. present perfect continuous
Trichology › View
The process of hair turning grey is usually caused by:
A. the natural aging process
B. hair damaged at the papilla
C. hair fiber over 15 years in age
D. being exposed to excessive sunlight