The first species of a community are __________. Fill in the blank(s) with the appropriate word(s)
pioneer species
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How do phototrophic microorganisms benefit when associating with corals?
A) Calcium and carbonate ions are released, which help buffer the pH and prevent dramatic pH shifts. B) The coral skeleton is used as a source of bicarbonate for the autotrophic growth of the phototrophs. C) The coral skeleton is an extremely efficient light-gathering structure that greatly enhances light harvesting for photosynthesis. D) The water's temperature in and around the coral skeleton is much warmer.
Butterflies are diploid organisms. In these animals, the sex of an individual is determined by Z and W chromosomes. Use
this information to answer the following question. Which chromosomes are carried by a normal male butterfly?
a. ZO b. ZW c. WW d. WO e. ZWW
Character displacement makes competing species less similar, which facilitates __________. Fill in the blank(s) with the appropriate word(s)
All EXCEPT which feature is characteristic of
millipedes? a. more pairs of legs than centipedes b. two pairs of legs per segment c. active predators d. cylindrical body shape e. inhabitants of the forest floor