Studies of cricket malpighian tubules revealed that potassium ions accumulated inside the tubule, moving against the potassium concentration gradient. how would you expect the movement of water to be influenced by the distribution of potassium ions?

Children begin to use tools at about what age? a. 18 months b. 2 years c. 1 year d. 6 months

In at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution. (10 points)

Rick is a toddler with an easy temperament and active nature. people are often seen stopping to talk to him in supermarkets and parks where his mother takes him in the evenings because he smiles willingly at other children and adults. this aspect of rick’s behavior most likely reflects a(n) active genotype–environment interaction suppressive genotype-environment interaction passive genotype–environment interaction evocative genotype–environment interaction