There are more primary producers than there are ... A. primary consumers
B. secondary consumers
B. tertiary consumers
C. quaternary consumers
D. all of the above

Glutamic acid: hydrophilic or hydrophobic? positive, negative, or neutral? valine: hydrophilic or hydrophobic? positive, negative, or neutral?

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

Match the types of competition to their descriptions