What are the main causes of biodiversity loss?
A. Invasive species, pollution, and climate change
B. Habitat destruction, overharvesting, and invasive species
C. Habitat destruction, overharvesting, invasive species, pollution, and climate change
D. Habitat destruction, invasive species, and climate change
Answer: C
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Two oxygen atoms joined to each other by the sharing of two pairs of electrons form a(n):
A. double covalent bond. B. single bond. C. hydrogen bond. D. ionic bond.
Following are four processes common to most cloning experiments:
transforming bacteria plating bacteria on selective medium cutting DNA with restriction endonucleases ligating DNA fragments Place these components in the order in which they would most likely occur during a cloning experiment.
Which of the following statements about meristems is false?
A. Meristems contain a mixture of differentiated and undifferentiated cells. B. Meristems consist of cells that repeatedly undergo mitosis. C. Meristems are found at the tips of stems. D. Meristems are found at the tips of roots. E. Growth only occurs at meristems and not in other regions of the plant body.
What is allowing new diseases that are driving the Panamanian golden frog (Atelopus sp.) to extinction?
A. deforestation B. new predators C. climate change D. introduced species E. All of the choices are correct