Answer: 1. the sun must have a supply of energy it is to exist is the topic sentence 2. most plants manufacure food 3. the world is different things to different peoplem 4. technologist seek to make new products for mans needs and pleasures 5. there is a streak of fatalism in every Filipinos make up 6. scientist think there is some kind of clock in me you and other animals.
Explanation: i can only answer the topic sentences but remember when looking for a topic sentence its usually the first or last sentence and just think what is this story mainly talking about hope it helps :))