If the ecosystem is balanced, which populations should be the largest? which should be the smallest?

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

Are the earth's ocean floor and continents the same age geologically? why or why not?

Tides that occur during the new and full moons