The most dangerous poisonous gas(ses) associated with volcanic activity ____.
a. is hydrogen sulfide
b. are invisible but detectable by smell
c. must be breathed to cause damage
d. can weaken buildings by reacting to form sulfuric acid
e. can mix with moisture to make dangerous aerosols
Question 2
Lava flows ____.
a. move so slowly that they do not present a danger to either life or property
b. are often redirected by emergency efforts
c. can be redirected only with long-term planning and construction
d. move fast and are a threat to life and property
e. move slowly enough that they are usually a threat only to property
The pH-activity profiles of two enzymes
Water, Hydrogen, Methane
Staying hydrated during physical activity
Hydrogen Bond with Peptide
Surtsey, a volcanic island, during the time of its formation.
Grade 1 reading activity