Question
Give any two functions performed by epithelial tissue.
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Give three functions of blood.
Give an account of some important viral diseases of human beings.
What is nitrogen fixation?
What is soil erosion? Explain means of preventing it.
Draw a well labelled diagram of animal cell and mention one function of the main cell organelles.
If the work done by a force in moving an object through a distance of 20cm is 24.2J, what is the magnitude of the force?