Which of the following is effective in reducing the number of viral infections? antibodies
none of the above
vaccines
inoculation

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

What class of levers is shown in this image?