Why are humans less dependent on smell as compared to vision?

Why is colour blindness more prevalent in males than in females? OR Why do more men suffer from heamophilia as compared to women?

State whether the following statements are true or false. Correct the false statements. Plants need less energy as compared to animals.

Why does it happen ? A ship dip into a larger depth in fresh water as compared to marine water.

Why did newton assume inverse square dependence on distance in his law of gravitation?

Read the paragraph and answer the questions given below: Renewable energy is energy produced from sources that do not deplete or can be replensied within a human's life time. The most common examples include wind, solar, geothermal, biomass, and hydroelectric power. This is in contrast to non-renewable energy is derived directly or indirectly from the sun. Sunlight can be captured directly using solar technologies. The sun's heat drives winds, whose energy is captured with turbines. Plants also rely on the sun to grow and their stored energy can be utilized for bioenergy. Not all renewable energy sources rely on the sun. For examples, geothermal energy utilizes the Earth's internal heat, tidal energy relies on the gravitational pull of the moon, and hydroelectric power relies on the flow of water. Name the renewable sources of energy which are not dependent on sun. What are they dependent upon?

A metal ball immersed in alcohol weighs W_1 at 0^@C and W_2 at 59^@C . The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

Veena observes that during winter setting of milk into curd takes more time while during summer, the same process happens faster. She asks about this difference in time taken to her elder sister. She also asks her sister about why certain reactions occur rapidly while others occur slowly. Her sister explains her about the various factors that affect the rate of chemical reactions. Based on the above scenario, answer the following questions. The reaction of aluminum metal with dilute hydrochloric acid takes place faster as compared to zinc metal. What could be the reason for this difference?

Why the genetic code is considered as comma less?

Why does human being have an important place in the environment?

The human male never passes on the gene for haemophilia to his son.' Explain. OR If a father and son are both defective in red green colour vision is it likely that the son inherited the trait from his father? Comment.