1. true or false flatworms are known as acoelomates.
2. true or false flatworms have bilateral symmetry and cephalization
3. true or false hookworms infect 25% of the world's population
4. true or false annelids have a closed circulatory system with blood vessels.
5. true or false annelids have a macro brain and micro brain
6.true or false leeches are parasitic flatworms that live on blood
7. true or false the most active mollusks are cephalopods
8. true or false gastropods are move by using a foot
9. true or false an octopus moves by jet propulsion by taking water into its mantle and forcing it out.

Mike was adopted, and his biological family history is unknown. although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. mike has heard about commercial laboratories that can compare segments of your dna to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. the results of these types of tests are highly inconclusive. if mike's dna showed that he shares similarities in a segment of dna with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. these tests can cost more than $2,500 and are not covered by many insurance companies. do you think that mike should undergo the genetic tests? explain your answer. what are the potential pros and cons of having such tests done? describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations.

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air