How much energy is need to raise 50 kg of water from 45 degrees c to 80 degrees c

Energy = mass ×specific heat capacity×change in temperature'

In this case, the mass of water is 50 kg, the specific heat capacity of water is 4184J/kg

the change in temperature is 80-45= 35 degrees celcius

Therefore, heat energy

           = 50 ×35 ×4184=7322000 Joules

But 1kJ =1000 Joules

therefore, the energy needed will be 7322 kJ

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

b - the respond is innate and varies over time.

good luck!