How can you determine the relative age of strata in a bed of rock?

a. darker colored layers are older.
b. younger layers cover older layers.
c. layers that have fossils are generally older.
d. each layer represents about one million years.

Aplant cell has vacuoles and a cell wall

This  focuses on  the entrepreneurial leadership of these  growth  firms.   governmentministers can play a critical  role  in  fostering  enterprise and innovation. their  role  is to direct thegovernment  departments and agencies to  focus  on the problem and develop effective policies.