Please help me asap Which statement best explains why dragonflies stand on branches with their head down and abdomen in the air when it is hot during the summer?

A. Dragonflies are ectotherms, so they can't sweat to control their body temperature.

B. Dragonflies are endotherms, so they can't sweat to control their body temperature.

C. Dragonflies are ectotherms, so they store energy in layers of fat and can control their body temperature.

D. Dragonflies are endotherms, so they store energy in layers of fat and can control their body temperature.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )

its probably to later but whats the question