Question

2. Which gland requires lodine for the production of its secretion?
a) pituitary
b) iodine
c) testis
d) ovary
3. Which of the following forces is a contact force?
a) magnetic force b) electrostatic force c) gravitational forced) frictional for
4. A spring balance is used to measure
a) mass of the object b) volume of the object
c) density of the object d) weight of the object
5) Sound can not travel through
a) solids
c) liquids d) vacuum
b) gases​

Answer 1

Answer:

2. thyroid

3. (d) frictional force

4. (a) mass of the object

5. (d) vaccum.

Answer 2

Explanation:

2.pituitary (a)

3.fricitional force (d)

4.weight of the object (d)

5.vaccum (d)