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.
Stress and anxiety often go hand in hand (stress can lead to anxiety symptoms, and anxiety can make stress worse). When you're overly tense, you may also turn to other behaviors that make anxiety worse such as smoking, abuse of drugs, or abuse of alcohol. Remember that stress and anxiety are often accompanied by physical symptoms such as stomachache, headache, dry mouth, dizziness, and sweating. If you have unexplained symptoms of anxiety, talk with your doctor. Anxiety disorder is treatable.