When measuring air temperature, it is best to avoid
a. shade.
b. shadows.
c. direct sunlight.
d. none of these.
Question 2
When an unstable Lutetium nucleus undergoes beta decay, the nucleus formed is that of
a. Lutetium.
b. Tantalum.
c. Ytterbium.
d. Thulium.
e. Hafnium.