What important milestone happens with the fetus during the second trimester? a. it makes sucking motions
b. it moves lower in the mother's pelvis
c. it turns head down
d. it can open and close its eyes

Blood, made up of red and white blood cells, work together to form

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.