It’s d. Warmer ocean temperatures but you also wrote that the answer is d in your question lol
I would say excretion since that means the process of expelling waste matter.
Answer:
Option-C
Explanation:
Scientists found a fossil of a fish with four limbs or legs. The fossil was estimated to be around 375 million years old.
The fossil showed the fins and scales of a fish but they also possess the bones of proto-wrist, shoulders and the elbow.
The presence of these bones can be a clue that the fish evolved the limbs to walk on the land and will later evolve into animals belonging to amphibians, reptiles and mammals. Therefore, the Tiktaalik is considered the missing link of how life evolved from water to land.
Thus, Option-C is correct.
Do you have any choice answers? As far as I know, the organisms that appeared first was micro-organisms. Hope this helps.
