Many introduced species have deleterious
effects on communities and ecosystems
because
a. coevolved parasites and competitors are
absent.
b. the introduced species are long-lived.
c. predators prefer the introduced species;
therefore, the local prey proliferate to
dangerously high levels.
d. the communities from which they came lost
an important predator, competitor, or
parasite.
e. all of these occur
A
You might also like to view...
Which of the following statements describes the hypothesis proposed to explain the regular arrangement of leaves around the stem?
A. Primordia are pre-programmed to grow in a set arrangement. B. Primordia are unable to communicate. C. Chemical signals from developing leaf primordia create regions preventing new primordial growth. D. Developing leaf primordia physically block new primordial. E. We do not currently have a hypothesis to explain how these growth patterns occur.
Discuss the importance of cancer driver genes such as oncogenes. How do oncogenes lead to cancer development? What will be an ideal response?
Right after eating a candy bar, insulin secretion would occur.
Answer the following statement true (T) or false (F)
What is the significance of buffers in biological systems?
A) They are usually involved in chemical reactions that result in energy production. B) They help maintain homeostasis with respect to pH. C) They are not present and are therefore insignificant in biological systems. D) They help maintain a constant temperature in biological systems.