When a beetle is born, the mother's and fathers genes assemble to create something new, those "genes" are "tested" to see if they will allow the beetle to live. If the beetle lives, they can reproduce, if they reproduce, those survival traits are passed down to their children.
This change demonstrates that some characteristics can be lost in evolution.
In the case of Chondrichthyes, boneless fish like sharks and rays, the skeleton made out of bones that were present in the common ancestor of them and other vertebrates was slowly changed for <span>cartilage which enabled these fishes to move agiler in the water.</span>
The answer that makes most sense to me is D. We stopped needing to kill whales, yay! :P
Answer:
Phototropism.
Explanation:
It refers to the tendency of plants to grow toward the light which they need to produce food for themselves.