1) Ao estudar a evolução da espécie humana moderna, observamos o surgimento de várias características em espécies ancestrais que beneficiaram seu estabelecimento e sucesso no ambiente. Entre essas características, podemos citar a bipedia e o desenvolvimento de ferramentas. A primeira espécie reconhecida como capaz de fabricar artefatos de pedra é chamada de:

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)

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

the answer is definitely a