How does energy usually flow in ecosystems?
a. from the sun through consumers to producers
b. from the sun through producers to consumers
c. from producers through the sun to consumers
d. from consumers through the sun to producers

B. From the Sun through producers to consumers.

Explanation:

All energy is obtained from the Sun. So the producers (in this case plants, fruits, vegetables) receive that energy through the process of Photosynthesis. After that transfer, consumers (primary, secondary, and tertiary) gain 10% of that Sun obtained energy from its producers.

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answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;