Using a universal system of measurement is most important during which part of scientific methodology?

asking questions
forming a hypothesis
collecting data
making observations

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..

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

In figure 1-2 what is the distance from point b to point c?