Question

all life on the earth can ultimately is traced back on the sea.creatures with limbs or fingers rather than fins have evolved from fishes about 335 million years before, which remain a mystery the new fossil find in a rock formation near scotland provides one of the few clue to what has been happening on these 30 million years

Answer 1

what is this Frnd........

Answer 2

The sentence has few incorrect usage of words and they are: a.) In place of On the sea it should be From the sea, b.) In place of before it should be ago, c.) In place of clue it should be evidence.

EXPLANATION:  

• In the given sentence there are minor mistakes which is making the sentence inappropriate. Although, the meaning of the sentence is clear but the usage of some words are inappropriate.
• For example, in place of back on the sea, it should be back From the sea because the origin of the life started from the sea, and to give the proper sense it should be from the sea and not on the sea.
• Secondly, in place of before, ago should be used, although both gives the similar meaning of earlier time but ago is used to denote time interval of longer duration and before is used for shorter periods of time.
• And, then again in the place of clue it should be evidence, because it is clearly showing that there is something concrete which can prove there point. That's why evidence should be used rather than clue.