Which is an example of nutrient pollution? A.
when sewage is disposed of directly into waterways without being sterilized
B.
when nitrogen mixes with a body of water leading to excessive growth of algae
C.
when oil from offshore drilling reaches waterways that irrigate farmland

Which of the following is an important function of child-directed speech? (a) it captures the infant’s attention and maintains communication. (b) it reduces the occurrence of infantile amnesia for the earliest memories of infancy. (c) it reduces the need for reciprocal interaction between caregivers and children. (d) it assists in prolonging rem sleep in infants.

Exercise has no positive effects on the nervous system? true or falseu

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