For communication to take place, there has to be:
a. transmission of the message.
b. medium.
c. sharing of meaning.
d. absence of noise.
glassophobia is known as the fear of:
a. glasses.
b. standing in front of people.
c. public speaking.
d. saying something.

first question your answer is B. medium

second question your answer is C. public speaking

hope that helps

your mom

explanation:

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .