How do primary producers provide energy for the food chain?
A) They break down organic molecules into inorganic elements.
B) They make their own organic molecules via photo- or chemosynthesis.
C) They receive energy from primary consumers.
D) They pass on organic substances from secondary consumers.
Correct Answer:
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Q11: A hectare of wheat fixes 32,000 kg
Q12: Q13: What are the most important transformers of Q14: How does DDT in the environment affect Q15: Lead is known to biomagnify and accumulates Q17: The giant interconnected global ecosystem is called Q18: Primary production is generally highest in Q19: The movement of chemicals through ecosystems is Q20: A single oak tree can support hundreds Q21: What do you think would result if![]()
A)tundrA.
B)desert.
C)wetlands.
D)tropical rain
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