The component of exercise that primarily strengthens the heart is aerobics. This heart strengthening exercises may include biking, running, walking, swimming, aerobic dances and a lot more that are sure to add strength to your your heart, lungs and stamina.
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Answer:
The earth rotates on its axis in anticlockwise direction, the angle of sun rays produces seasonality.
Explanation:
- It's a fact that the amount of solar intensity and daylight varies form place to place on the surface of the globe as the earth is not flat nor it's completely a sphere.
- As it has bulges around the equator that is a greater circle which gets most of the annual sunlight at 90° angle and is due to its location in tropics.
- While the places located near the poles have fewer hours of sunlight as of low duration as the rays of the sun take more time to moves from a low angled path. These north and south poles are impacted by seasonality and have 6 months of day and night.
Two countries that are on the opposite sides of the demographic transition, one being in the first faze, while the other in the fourth faze, will differ in pretty much everything.
The country in the first faze will have low economic development, bad infrastructure, the availability to the institutions will be limited to only some people. Most of the population will live in poverty, being on the verge of survival, and in very unhygienic conditions.
The country in the fourth faze will be the total opposite. It will be a highly developed country, with excellent infrastructure, the institutions are available for everyone. Most of the population will high income and be living in nice conditions.
In the country in the first faze, the birth rates will be high, but the death rates will be high as well, having a very low life expectancy too. In the country in the fourth faze, the birth rates will be very low, and the death rates will also be low, with the life expectancy being very high.