<u>Answer:</u>
Free-living flatworms have developed a nervous system which helps them to sense the food. They have a head at one end of the body and each side of the head has sensory cells. These cells help them to sense chemicals and other movements around them.
While Parasitic flatworms don't have any nervous or digestive system as they live on the food digested by the host. They have special hooks attached to their head which help them to attach a host. They have developed some covering called 'teguments' which protect them from digestive liquids.
It may be A
I'm not really sure but thats what I think.
Answer:
Explanation:
renewable (able to reproduce in short time)
trees, able to grow within years
wind produce by clouds and water
electricity made by power from sun who thunder
sewage municipal wastewater which tbh isnt much of a resource
non renewable
Coal
most major minerals (Diamonds, emerald's, granites, and jewels)
Oil
natural gas
nuclear energy
The large, slow brain waves associated with deep sleep. Rapid eye movement sleep; a recurring sleep stage during which vivid dreams commonly occur.
Cc Bb Aa I think but I could be wrong
