Please answer ASAP! Which of the following best explains why land-grant universities are working with countries abroad to develop their agricultural systems?

A. Developing agricultural systems abroad is important because the land in other countries is similar to the land in the United States.

B. Developing agricultural systems abroad is important because the United States wants to open trade with every country in the world.

C. Developing agricultural systems abroad is important because other countries have practices than can benefit the United States.

D. Developing agricultural systems abroad is important because many countries' agricultural practices are hurting the environment.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.