its thermometer
A THERMOMETER measures the air temperature. Most thermometers are closed glass tubes containing liquids such as alcohol or mercury.
thats why
Your answer would be the second one B
It is a growth of part of plants that has a respect to the forces of gravity,whwn a plant grows upward it is negative geotropism.when a downward plant grows it is positive geotropism
The respiratory usually develops at 12 weeks so i would definitely say breathing starts in this period.
