Which of the following is the greatest threat to biodiversity?
A) overharvesting of commercially important species
B) introduced species that compete with native species
C) pollution of Earth's air, water, and soil
D) disruption of trophic relationships as more and more prey species become extinct
E) habitat alteration, fragmentation, and destruction
Answer: E
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Predict what would happen to the daughter cells if the G1 phase of the parent cell is shortened?
A. The cells would be smaller than normal. B. The cells would be missing chromosomes. C. The cells would not undergo cytokinesis. D. The cells would be larger than normal.
The actinoplanetes can be found in ________ habitats.
A. freshwater B. marine C. soil D. All of the choices are correct.
Which system collects and returns tissue fluid to the blood?
a. immune system. b. skeletal system. c. integumentary system. d. endocrine system. e. lymphatic system.
A muscle is arranged in bundles of muscle fibers, called ________
Fill in the blank(s) with correct word