A. 26
B. 27
C. 28
D. 30
what are stars mainly made of ?
A. Balls of gass
B. Rock
C. Ice
D. Light
A. oxygen
B. nitrogen
C. hydrogen
D. carbon dioxide
What are considered the building blocks of matter?
A. Molecules
B. Protons
C. Elements
D. Atoms
Which among the following is responsible for producing color of human skin ___?
A. Insulin
B. Vitamin K
C. Melanin
D. DNA
A. Phycology
B. Pomology
C. Oneriology
D. Trichology
Phycology, also called algology, the study of algae, a large heterogeneous group of chiefly aquatic plants ranging in size from microscopic forms to species as large as shrubs or trees.