An electric rice cooker rated 800 W, 230 V is switched on for 30 minutes. a) How much electrical energy is used by the rice cooker? b) Calculate the cost of energy that is used by the rice cooker if the cost per kWh is 30 sen.

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

What is the difference between bacterial infections and viral infections?