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.
IBS can cause vomiting, diarrhea, or constipation. Anxiety disorder may cause loss of appetite and lack of interest in sex. Other symptoms include muscle tension, headaches, and insomnia. Frequent panic attacks can cause you to fear the anxiety attacks themselves, thereby increasing overall anxiety. The constant state of stress can lead to clinical depression.