which of these is true about hormones a they are chemical substance secreted by glands b they are relised directly into the blood stream c. they act as chemical messengers d all of these
Answers
Answered by
0
Answer:
option d all of these is correct
Answered by
0
Explanation:
a wire is stretched its length and area of cross section is changed but its volume remains constant.
volume=length×area
if length is doubled area will become half to maintain volume constant.
Resistance=resistivity×length/area
By stretching the wire resistivity wont change because resistivity depends on nature of material an
Similar questions