To living organisms, the most dangerous debris from tephra is probably volcanic ash , because it spreads so widely.
B) Sound does not require a medium for travel.
C) Magnetism is caused by the spinning motion of electrons.
D) Electricity flows from positive to negative areas.
Answer:
Magnetism is caused by the spinning motion of electrons. is true :)
Explanation:
A. a plasma membrane
B. vacuoles
C. cell wall
D. cytoplasm
E. chloroplasts
F. protoplasm
b. disaccharide
c. polysaccharide