The phenomenon in which different-sized gaps in corridors allow certain organisms to cross and restrict others is referred to as the ________ effect
Fill in the blank(s) with correct word
filter
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Biological fitness is best defined as
A) A heritable trait that increases the match of an individual to its environment. B) Variability in the population for a trait that increases survival. C) Relative the ability of an individual to produce offspring that survive and reproduce. D) Competition among individuals for resources that allow them to have more offspring. E) Similar reproductive success among individuals in a population.
Which plasma membrane component is always found on the exterior surface of cells and allow cells to recognize each other?
a. Carbohydrates b. Enzymes c. Cholesterol d. Glycolipids
Filter-feeding is used by
a. sea squirts. b. clams. c. sponges. d. lancelets. e. all of these.
A friend asks you for a definition of endemic because she is writing a history paper and this word keeps occurring in the literature in reference to bison on the Great Plains of the United States. Your response is that the word endemic means
A. a species that has coevolved with humans on Earth. B. a species that lives in only one area of Earth. C. a species that has gone extinct since humans have evolved on Earth. D. a species that exists in many habitats on Earth.