Which level of organization reflects an individual composed of multiple organ systems?
Which level of organization reflects an individual composed of multiple organ systems?
D. organism
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Almost all of the antibodies found in a newborn are
A. the result of infection. B. self-made. C. IgM. D. the result of passive immunity.
Which of the following statements about the life cycle of a crab is true? a. Most species of crab are hermaphrodites
b. A female crab hides fertilized eggs under a rock in a sheltered spot and guards them until they hatch. c. A crab larva will molt as it grows. d. Young crabs look like miniature adults as soon as they hatch from their eggs.
The deep sea is characterized by being a very unstable environment
Indicate whether the statement is true or false
Volatile chemical substances that elicit specific responses in other members of the same species are referred to as
A. hormones. B. pheromones. C. transposons. D. pectines. E. spicules.