What observation did Darwin note to draw the conclusion that the A. cristatus lizard has predators in the sea? It voluntarily swims out to sea.

It eats aquatic plants.

It will not go in water when scared.

It has feet and a tail adapted for swimming.

What observation did Darwin note to draw the conclusion that the A. cristatus lizard has predators in the sea? It has feet and a tail adapted for swimmingExplanation:

It will not go in water when scared.

Explanation:

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.