What words best describe the structure of phospholipids in the cell membrane?
a. loosely-held in layers that vary greatly from cell to cell
b. dynamic and loosely-held in two layers
c. loosely-held in one layer
d. fixed tightly in two layers
e. fixed tightly in one layer

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology

In this assignment, you will analyze an example of speciation by researching the finches of the galapagos islands. then you will answer questions to construct explanations and draw conclusions based on the information you gather. someone plz !

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.