Why was farming difficult in ancient greece?

a) the land was desert-like and it never rained.
b) there were no farmers in ancient greece.
c) there were many mountains and hills.
d) the soil was too rich for growing crops

Find and simplify an expression for the area of five rows of square with side lengths of x

How are diamonds and graphite the same? how are they different? a. both diamonds and graphite are made entirely out of carbon. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite. b. both diamonds and graphite have atoms that are arranged with flat layers. they are different because only graphite are made entirely out of carbon. c. both diamonds and graphite have atoms that are arranged with three-dimensional structures. they are different because only diamonds are made entirely out of carbon. d. diamonds and graphite have no similarities. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite.

Both the nervous and endocrine systems send electrical and chemical signals for internal communication. select the best answer from the choices provided t f