Sugar is uncountable; therefore, the sentence has a singular verb. Marbles are countable; therefore, the sentence has a plural verb. 3. Compound subjects joined by and are always plural. 4. With compound subjects joined by or/nor, the verb agrees with the subject nearer to it.
Panic disorder causes panic attacks spontaneous feelings of anxiety, terror, or impending doom. Physical symptoms include heart palpitations, chest pain, and shortness of breath. These attacks may be repeated at any time. People with any type of anxiety disorder may have panic attacks.
The Physical Effects of Anxiety. Some of the physical effects of anxiety attacks include excessive sweating, a decrease in salivation, and changes in the digestive system causing symptoms such as nausea.he effects of anxiety on the respiratory system include an increase in the depth and speed of breathing. This much needed response provides the body's tissues and cells with more oxygen, and also affects changes in the flow of blood.