Question 18(Multiple Choice Worth 4 points) (01.03 MC)

It is hypothesized that RNA may have evolved before DNA because RNA molecules

A

were the first molecules synthesized by Miller and Urey

B

are more important to genetic inheritance than DNA

C

can catalyze a variety of biologically important reactions

D

are found in more modern cells than are DNA molecules

where is the diagram?

if you insert the diagram ill be able to you

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)

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.