Question

How does energy usually flow in ecosystems?
A.
from the Sun through producers to consumers
B.
from consumers through the Sun to producers
C.
from producers through the Sun to consumers
D.
from the Sun through consumers to producers

Answer 1

A. from the Sun through producers to consumers

Producers (plants, algae, some bacteria) capture solar energy via photosynthesis and convert it to chemical energy; consumers obtain that energy by eating producers (or other consumers). Energy flows one-way and is lost as heat at each transfer.