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.
Anxiety attacks are complex, and symptoms can be caused by a host of different bodily changes. However, the most common cause of dizziness is hyperventilation. During anxiety attacks, you tend to breath faster and less efficiently, taking in more oxygen than you need and breathing out too much carbon dioxide.