which is the most common safety rule to follow before leaving the lab?

check labels.

avoid acids.

wash your hands.

power off electrical devices.

C wash your hands

Explanation:

the question says the MOST common one

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)

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects