In what respect did the culture of Neanderthal man represent advancement over Homo erectus?

What is culture? What types of evidence suggest that Homo erectus had a culture?

Figure 5.18 shows a man standing stationary with respect to a horizontal conveyor belt that is accelerating with 1 m s^-2 . What is the net force on the man? If the coefficient of static friction between the man’s shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt ? (Mass of the man = 65 kg.)

In an experiment, a solution of a hydrochloric acid is to be kept between 30^@ and 35^@ C. what is the range of the temperature in degree fahrenheit, if conversion formula is given by C=5/9 (F-32) Where C and F represent temperature in degree celsius and degree fahrenheit respectively.

Rearrange the following in the correct order of their apperance on Earth between two million years and 40,000 years back Neanderthals, Australopithecus, Homo erectus and Homo habilis.

Three conductivity cells A, B and C containing solutions of zinc sulphate, silver nitrate and copper sulphate respectively are connected in series. A steady current of 1.5 amperes is passed through them until 1.45 g of silver is deposited at the cathode of cell B. How long did the current flow ? What mass of copper and what mass of zinc got deposited in their respective cells ? (Atomic mass : Zn = 65.4 u, Ag = 108 u, Cu = 63.5 u)

Sketch a graphs showing the variation of stopping potential with frequency of incident radiations for two photosensitive materials A and B having threshold frequencies v_0>v_0' respectively? What does the value of the intercept of graph'A' on the potential axis represent?

Climate refers to the physical environmental factors of an area. These include duration and intesity of light, temperature, humidity, wind, gases, etc. The climate change refers to the changes in these environmental factors of an area over long eriod of time. Main culprit of such climatic change is man himself as his activities are adversely affecting the delicate ecological balance between various components of the environment. Answer the following questions regarding climate change. What are ill-effects of global warming?

Climate refers to the physical environmental factors of an area. These include duration and intesity of light, temperature, humidity, wind, gases, etc. The climate change refers to the changes in these environmental factors of an area over long eriod of time. Main culprit of such climatic change is man himself as his activities are adversely affecting the delicate ecological balance between various components of the environment. Answer the following questions regarding climate change. What is global warming? Enlist the contribution of various causes of global warming and their sources.

What are the advantages of tissue culture methods over conventional methods of plant breeding in crop improvement programmes?

Given below is the representation of the extent of global diversity of invertebrates What groups the four portions represent respectively.