A Scientist Studied Peregrine Falcons to Determine Why the Numbers

question 36

Multiple Choice

A scientist studied peregrine falcons to determine why the numbers of birds was declining.She determined that

• A)global warming (too much carbon dioxide)had increased the death rates in the newly hatched chicks.
• B)the genetic diversity of the falcons was too low to sustain their population level.
• C)the falcons had lost much of their habitat due to human developments.
• D)the falcon's habitat had been fragmented and the subsequent edge effect affected their ability to hunt for prey items.
• E)the levels of DDT in the environment were having a detrimental effect on eggs (causing the eggshells to be too thin)that were being laid by the female falcons.

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Definitions:

Leukocytes

White blood cells that are part of the immune system, involved in protecting the body against both infectious disease and foreign invaders.

Platelets

Small blood cells that play a crucial role in blood clotting and wound repair.

Anti-A Sera

A serum containing antibodies against A antigen, used in blood typing to identify blood group A.

Anti-B Sera

A type of antiserum used in blood typing that contains antibodies targeting the B antigen found on red blood cells.