Geologists determine the geological history of an area by examining rock
layers in geologic columns. The diagram
shows three geologic columns from the
same region that have not been
overturned
A Place an arrow at each rock layer
boundary to represent a missing layer
of rock in each of the three columns
В.
Select the oldest rock layer
represented in the group of geologic
columns
• You may use the arrow more than once.
• There may be more than one correct
answer

the glands which are associated with each description is given below:

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.