Scientists are creating vaccinations that prevent people from getting bird flu. If the virus mutates, a new vaccine needs to be made. The vaccine needs to be tested, which can be dangerous. It also takes a long time for scientists to know whether the vaccine works.
Answer:
Antidepressants
Explanation:
Medicines such as Selective Serotonin Reuptake Inhibitors (SSRI) ease the symptoms of heavy depression by increasing your levels of serotonin. Serotonin is the hormone that is key for your happiness because it stabilizes mood and initiates the feeling of well-being. Moreover, it actually affects your whole body through the nervous system. But it also exerts numerous forces on your heart. These include <em>an increase in heart rate</em>, fibrosis of cardiac valves, coronary constriction, arrhythmias and thrombosis
Answer:
a. It can be used for photosynthesis.
Explanation:
Since carbon dioxide is needed in the photosynthesis process, then much of the carbon dioxide which is produced by green plants is not always excreted in form of metabolic waste because it can be easily used in the photosynthesis process.
Answer:
D
Explanation:
All human cells are eukaryotic
