Question The common cold is caused by a virus that enters the human body and causes mild, flu-like symptoms. It is very difficult to develop a vaccine against the common cold. The reason for this is that the common cold virus –
Hides in the digestive system
Hides in the digestive system

Includes RNA as its genetic materials
Includes RNA as its genetic materials

Is too small for the immune system to detect
Is too small for the immune system to detect

Changes rapidly due to high mutation rates

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

How can you approximate the number of calories required to keep you in energy balance?

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.