Answer to Question 1
C
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Conservation of matter: Children begin to understand quantities, weight, and volume such as a quart of milk whether it is in the milk container or poured into a plastic jug as the same amount. Reversibility: Children walk to school and know that by reversing the direction of the walk they can get home again. Seriation: Children can arrange things in a series, from big to little or in a numbered sequence. Complex problem solving is the ability of the child to think in the abstract.
Answer to Question 2
C
Feedback:
Loop of Henle concentrates salts by reabsorbing water. The glomerulus filters water, wastes (urea), glucose, and salts out of the blood. The proximal convoluted tubule actively transports glucose, amino acids, and salts across membranes and returns then to the blood. The distal convoluted tubule reabsorbs sodium, water, and the remainder of glucose.
Cheetah mother with cub
The nurse is using Standard Precautions to draw blood.
The couple discusses grief over the loss of a child.
Goat's milk
This iconic photograph by Dorothea Lange, entitled “Migrant Mother,” has become a famous ...
Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period