Question

1.say true or false
premolar are sharp and pointed


2.fill in the blanks
_______pollutants come from factories and vehicle waste
a. water
b. air
c.land
d. noice


3. needle, knife etc are _______ machine
a. difficult
b. simple
c. systematic
d. complex

​

Answer 1

1 false

2 air

3 simple

Answer 2

Answer:

1 t

2 air

3 complex

all ok