1. Bring water to a boil in a small saucepan; stir in couscous. Cover, remove from heat, and let stand 5 minutes. Transfer couscous to a large bowl. Add carrot and next 5 ingredients; stir well.
2. Combine orange juice and remaining 3 ingredients; stir well. Pour over couscous mixture; toss well. Cover and chill at least 1 hour.