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  1. the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.


  2. Explanation:

    Researchers say that animals, non-humans, do not have a true language like humans. However they do communicate with each other through sounds and gestures. ... But they slowly learn the words of the language and use this as form of communication The truth seems to be that some animals can mimic the sounds of human speech, but only a tiny minority can talk meaningfully as humans do. These less capable animals are just as fascinating as the truly skilled, because they could reveal how our own language skills evolved.

  3. 4 Km/ 1 hr


    I think that's the right answer.

    Here's how I solved it. First, I cross multiplied:

    2 Km > 30 mins

    ?  > 60 mins (there's 60 mins in 1hr)

    Then, I did

    (60 x 2)/30 and I got 4 km per hour.

  4. distance covered = 2 km

    time taken = 30 minutes = 0.5 hour

    speed = distance/time = 2/0.5 = 4 km/h



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