Typical united states weather patterns show the continental polar air mass moving south toward the gulf of mexico. why does this air mass movement happen? a) colder air masses move from north to south. b) continental air masses always move in the direct of the nearest body of water. c) the polar air mass moves south to replace the rising maritime tropical air mass. d) the continental polar air mass is blocked in by maritime air masses on all sides.

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)

the answer to your question is tooth decay.