Evolution through natural selection will occur most rapidly for populations of plants that
A. are already well adapted to the environment.
B. live in an unchanging environment.
C. are in the same genus.
D. reproduce sexually and live in an unstable environment
Ans: D. reproduce sexually and live in an unstable environment
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Which of the following is NOT true
concerning nectar? It is a. sucrose-rich. b. a dilute fluid. c. the only food for most butterflies. d. rich in vitamins and minerals. e. easy for pollinators to sip
Which two kingdoms contain both unicellular and multicellular organisms?
A.) Archaea and Animalia B.) Protists and Bacteria C.) Animalia and Fungi D.) Protista and Fungi
Exotoxins:
A. Are made of protein B. Are always enzymes C. Are present in Gram-positive bacteria only D. All of the above E. None of the above
If it were possible to have antagonistic muscle pairs in an arm contract simultaneously, what movement would the arm make?
A) The arm would move away from the body. B) The arm could move easily in each direction. C) The arm would be locked in position. D) The arm would move toward the body in a curling movement.