In 1955, my father, a pilot and instructor in Belgium, showed us a Walt Disney film from 1943, made for military aviators, called: “Air Masses and Fronts.”
The animators used the following to illustrate the difference between a warm and cold front: The warm one was a paint brush drawn over a piece of paper. The cold one was the brush pushed over the paper, curling as it moved.
A warm front is simply warmer air that rises slowly over colder one. It is long, perhaps some hundred miles long. It is slack. As the air rises, condensing its moisture, it causes the formation of strato-cumulus, drizzle then rain.
The cold front is much steeper because now, the cold air moves in from under, lifting the warmer one over much shorter distance. The air is unstable and causes gusty and shifting wind, rain showers, perhaps some isolated thunderstorms but, since it is colder polar air, the visibility is much better.
Warm and cold fronts occur when a mid-latitude low pressure moves eastward along the polar front, pushing the warm one and pulling the cold one.
Since the cold one is steeper and moves faster, it soon joins the warm front causing what is called, an occlusion front. It can be a warm occlusion, if the cold front rises over the warm one, or a cold occlusion if the cold front lifts the warm one.
Hoppe this helps :) also next to do you mind adding a picture??
When we drink less water or we are dehydrated the body will compensate for 1-2% of the total amount of water by creating a sensation of thirst. The kidneys, brain, hormones and glands work in co-ordination monitoring the amount of water consumed to the amount of water lost.
The hypothalamus gland regulates the temperature of our body and balances the processes to control the amount of fluids in body. On detecting less amount of water in blood the hypothalamus gives signals for releasing the anti-diuretic hormone which causes kidneys to remove lesser amount of water from the blood. As a result of this we urinate less and the urine is concentrated dark in appearance. The brain also signals to consume water or liquid to bring the hydration level of the body to normal.
<u>Answer</u>:
C. Winds carry air pollution across oceans and continents.
Planet Earth has complex global wind and air current systems. Thus, air pollution produced in one place, will never remain there for ever. It some cases, due to wind patterns, the majority of the pollution may be carried away to some other place on the globe. This is why US should be concerned about air pollution in China. Even if the distance between the two countries is signinificant, it does not mean that US will remain unaffected by China's activity.
Answer:
e. spores
Explanation:
In the given question, the characteristics of a plant are mentioned which are the dominant sporophyte, cell wall and the Chl a or b.
It is mentioned that the plant has a dominant sporophyte therefore it produces the spores during its life cycle. The other features like the endosperm, seeds, flowers are the characteristics on the basis of which the plant can be characterised as they differ in the plants.
Since the production of spores is a characteristic feature of the sporophyte, therefore, it will be least considered by the botanist to discover a new species.
Thus, Option-E is the correct answer.