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.
Physical Scariness Symptoms. Even though anxiety does involve a lot of Scary thoughts, the basics of anxiety are physical. When you have anxiety, your body activates as though you're facing a predator, releasing adrenaline and causing a host of changes to your body that are all designed to keep you safe from harm.