How does DDT in the environment affect many birds?
A) stunted growth of chicks
B) chronic liver failure in adults
C) neurological degeneration
D) decreased reproductive rate
Correct Answer:
Verified
Q9: Trophic-level transfer efficiency averages about
A)1%.
B)25%.
C)33%.
D)10%.
E)0.1%.
Q10: In food webs,chain lengths
A)are long and complex.
B)have
Q11: A hectare of wheat fixes 32,000 kg
Q12: Q13: What are the most important transformers of Q15: Lead is known to biomagnify and accumulates Q16: How do primary producers provide energy for Q17: The giant interconnected global ecosystem is called Q18: Primary production is generally highest in Q19: The movement of chemicals through ecosystems is
A)tundrA.
B)desert.
C)wetlands.
D)tropical rain
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