Question: This is the sphere of communication expression and sharing of ideas with others and it is here that you are most awkward and sensitive to criticism and rejection
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Answer: This is the sphere of communication, expression and sharing of ideas with others, and it is here that you are most awkward and sensitive to criticism and rejection.

Question: Earthworms eat plant remains and mix them into the soil as they munch their way through the soil profile
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Answer: Earthworms eat plant remains and mix them into the soil as they munch their way through the soil profile.

Question: The Poincar conjecture one of the famous problems of 20thcentury mathematics asserts that a simply connected closed 3dimensional manifold is a 3dimensional sphere
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Answer: The Poincare conjecture, one of the famous problems of 20th-century mathematics, asserts that a simply connected closed 3-dimensional manifold is a 3-dimensional sphere.

Question: Much to the astonishment of related onlookers I took a tape to the offending loafends but found them hard to measure accurately
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Answer:
Much to the astonishment of related onlookers I took a tape to the offending loaf-ends, but found them hard to measure accurately.