The arrow in the photo represents a force. which force is equal but opposite to the one shown? a. the force of gravity that acts on the kitten
b. the force that the branch applies to the kitten
c. the normal force that the air applies to the kitten
d. the force that the kitten applies to earth

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.