Hile sitting in his backyard, john is bitten by a mosquito near his elbow. the spot becomes red, swollen, and slightly warmer than the surrounding area. this is an example of what process?

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

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