Answer:
Approximately 4.6 billion years ago
Explanation:
The one that best explains ways in which fish and mammals differ is : fish are ectothermic and lays eggs to reproduce, while mammals are endothermic and give birth to offspring
The 'common fish' that give birth to its offspring such as whales and dolphins are considered mammals
hope this helps
Its is already a balanced equation so the option a.1 would fill in for the blank.
Photosynthesis is a process found only in plants, not in animals
It uses carbon dioxide and produces Oxygen.
<h2>
Grass uses photosynthesis to produce glucose, which is used within the grass for growth.</h2>
