The correct answer is A. The appearance of Halley’s comet every 76 years.
Explanation:
Cyclic events follow a pattern of occurrence, this means they occur every certain time and can be predicted. This category includes natural phenomena such as weather patterns or the phases of the moon. In this context, the one that is an example of a cyclic event is Halley's comet (option A) because the appearance of this comet occurs every certain time (76 years) and this can be predicted, which are two key features of cyclic events. Also, others such as hurricanes, tsunamis, or earthquakes do not follow a precise cycle or cannot be precisely predicted.
Answer:
The answer is C. Create a video showing factories how to use cooling ponds and towers.
Explanation:
Sun cancer & sunburn. you can use sunscreen to protect yourself.
The correct answer is muscles can only pull.
The movement of arm takes place by the relaxation and contraction of muscles. Muscles in animals are in pair because muscles can only pull, when a pair of muscle is present in animals one muscle relaxes and the other one contracts. An example of this is biceps and triceps of arm. The triceps of the arm relaxes while the biceps of the arm contracts, this movement helps to lift the arm. The reverse also takes place in the arm.
Answer:
Victoria will intially felt active, reduced sleepiness but consuming too much caffeine may be risky.
Explanation:
Victoria will felt more active and alert after 30-45 minutes of drinking the enrergy drink because energy drink contains caffeine and its concentration in at peak after 30-45 minutes. Caffeine will reduce sleepiness.
Caffeine will block the adenosine pathway for short period of time. Adenosine is a chemical becuase of which we felt tired and Caffeine will allow feel good molecules to be released in brain such as dopamine. That why Victoria will felt more active, concentrated and good.
- But consuming too much energy drinks mean victoria will be consuming too much caffeine that may be risky.
- Excess amount of caffeine can cause vomiting, nausea, convulsions and high blood pressure even can cause death.
