Which level of organization is the highest?
a) tissue
b) an organ
c) an organism
d) an organ system

The kobe habor wharfs where the center of japanese exports to other countries. it had 200 wharfs before the earthquake. how many wharfs remained undamaged after the earthquake? a. 130 wharfts b. 3 wharfs c. 30 wharfs

Pulmonary arteries carry highly oxygenated blood. true or false?

How energy move through ecosystem ?