Q: Q: A bicycle is an example of a compound machine made of many what? Choices: - linked machines - useful machines - interchangeable machines - simple machines A:
A: simple machines

Q: Q: What do you call the membrane lining the back of the eye? Choices: - cornea - stimulation - aperture - retina A:
A: retina

Q: Q: By what process does oxygen enter the pores of flatworms? Choices: - absorption - filtration - permeation - diffusion A:
A: diffusion

Q: Q: What is the causative agent of sleeping sickness in humans? Choices: - pseudomonas asplenii - escherichia coli - bacillus aerophilus - trypanosoma brucei A:
A: trypanosoma brucei