Double displacement: parts of compounds switch places to form two new compounds
FYI
decomposition: a complex substance breaks down into two or more simple substances
Single displacement: a single substance replaces another substance in a compound
<span>Synthesis: two simple substances combine to form a new complex substance</span>
Answer:
The two Russian authors based their exposition on what they called the Friedmann theory of a singular beginning of the universe, referring throughout to the “theory of the hot universe” as an alternative to the hot Big Bang theory.
Answer:
2.27 cm
2.5 cm
Explanation:
u = Object distance = 25 cm
v = Image distance = 2.5 cm
f = Focal length
Lens Equation
The minimum effective focal length of the focusing mechanism of the typical eye is 2.27 cm
when 
The maximum effective focal length of the focusing mechanism of the typical eye is 2.5 cm
