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The term fertility of oceans is used to express the capacity for the production of inorganic matter.
Arrange the following demographic transition theory given by Blackur (ascending order)
1. Declining phase with low mortality, lower fertility
2. Low stationary phases with low fertility and low mortality
3. Early expanding phase marked by high fertility
4. High stationary phase marked by high fertility and mortality
Which one of the following pairs of properties of typical air masses is correct? Air Mass Source Region A. Maritime Equatorial Warm oceans in the equatorial zone B. Maritime Polar Warm oceans in the tropical zone C. Continental Tropical Less warm oceans in the tropical zone D. Continental Polar Moist oceans in the polar zone
Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All rocks are oceans. All oceans are balloons. Some watches are balloons. Conclusions: I. Some balloons are rocks. II. Some watches are oceans. III. All oceans are rocks.
Two trains Intercity express and Suvidha express start from Udaipur to Jaipur and Jaipur to Udaipur at the same time. Their speeds are 50 km/h and 100 km/h respectively. If a passenger travelling in Suvidha express reaches Ajmer in 2 hours and waits for his brother. Who is coming to Ajmer from Intercity express, if the distance between Udaipur to Jaipur is 350 km then find how many hours Suvidha Express passenger waits for his brother at Ajmer.
The distance between Delhi and Pune is 1000 km. Rajdhani express started at 6 am from Delhi to Pune and Shatabdi express started at 8 am from Pune to Delhi. Speed of Rajdhani express is half of that speed of Shatabdi express and Shatabdi express reached at 4 am on next day of its journey. When will the trains meet for the first time?
Jansatabdi Express crossed a lamp post in 65 sec and Duranto Express crossed the same post in 30 seconds. If the length of Duranto Express is two-third of that of the Jansatabdi Express, what is the ratio of the speeds of Jansatabdi and Duranto Express?
Rajdhani express left from Delhi for Mumbai and Shatabdi express left Mumbai for Delhi. The trains are 845 km apart after they meet 5 hr ago. Rajdhani express arrived Mumbai 36 hr after their meeting and the Shatabdi express Delhi 49 hr after their meeting. What is the speed of Rajdhani express?
By studying all following options, select a pair that uses most closely similar reasoning. a. Researchers have looked at the communication between different animals and found that meerkats have a series of alerts and calls that fail into two categories, greetings and alarms. Since we can be sure that this meerkat is not calling as a greeting, we must accept that he is attempting to raise the alarm. b. Farmers must choose between using organic or non-organic fertilisers on their land. Organic fertilisers can produce a lower crop yield and farmers may find it difficult to change to organic methods if they have been using non-organic methods for some time. Farmers should, therefore, consider the longer-term impacts of their decisions. c. Either young persons are getting cleverer each year or examinations are becoming easier for students to pass. Since there is very little evidence from IQ testing and other supposed benchmarks that young persons are more intelligent now than in the past, we must conclude that the examination system is easier for students today than it was in the past. d. Closed wood burning chulhas are a better way to cook your food than open fire chulhas. Closed wood burning chulhas are highly efficient, whereas the open fire of open fire chulhas loses a great deal of heat in the air. More people should, therefore, use closed wood burning chulhas in their homes.
Statements : All oceans are rivers. Some springs are rivers. All wells are springs.

Conclusions :
I. Some springs are oceans.
II. Some wells are rivers.
III. Some rivers are oceans.
IV. No well is river.