Five kinds of stressors are
acute time limited
belif naturalistic
stressful events
chronic
distant
The northern lights, or aurora borealis, offer an entrancing, dramatic, magical display that fascinates all who see it — but just what causes this dazzling natural phenomenon?
At the center of our solar system lies the sun, the yellow star that sustains life on our planet. The sun's many magnetic fields distort and twist as our parent star rotates on its axis. When these fields become knotted together, they burst and create so-called sunspots. Usually, these sunspots occur in pairs; the largest can be several times the size of Earth's diameter.
At the center of the sun, the temperature is 27 million degrees Fahrenheit (15 million degrees Celsius). As the temperature on its surface rises and falls, the sun boils and bubbles. Particles escape from the star from the sunspot regions on the surface, hurtling particles of plasma, known as solar wind, into space. It takes these winds around 40 hours to reach Earth. When they do, they can cause the dramatic displays known as the aurora borealis. [Infographics: How the Northern Lights Work & Anatomy of Sun Storms & Solar Flares]
Answer:
The three reasons are Economic development, rising population and undernourishment
Explanation;
as country's grow wealthier people can afford to eat more food, world population continues to grow and likely to exceed 8 billion people by 2030, and people have been consuming too few calories which can cause people to become underweight Hopefully this helps!
Answer:
The two types of nutrients are :-
Micronutrients:- are vital dietary ingredients that organisms require in variable amounts throughout their lives in order to orchestrate a variety of physiological activities that keep them healthy.
Macronutrients:- a chemical element or substance (such as potassium or protein) required in relatively high levels for a live organism's development and health.
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Hope this helps!
