For 1. Available
2. convincing
3. vain
Answer:
To commemorate something means to remember something and by doing so to honor it, as in “We would like to commemorate his many years of past service by presenting him with this lovely gold watch.”
The fishes adapt to their environment focusing mostly on the currents in the water.
Answer: Option C
<u>Explanation:</u>
The fishes have features that are well developed to adapt their aquatic environment. They have fins to propel them in the water current. When they are swimming they change directions coherent to the water currents.
The streamlined body of the fishes help them stealthily glide through the water currents. The bladders allow the fish to maintain the buoyancy level. The lateral line of the fishes helps detect vibrations in the water.
