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 hormones released by anxiety affect every organ in the body, and your largest and most sensitive organ isn't your heart or your lungs or your kidneys-it's your skin. So it should come as little surprise that your skin can easily be affected by anxiety, and in some cases these may cause skin color changes.