are agents in the that can reach the fetus through the mother and cause harm. A.
Spermicides . . . bloodstream
B.
Abruptio placentae . . . placenta
C.
Teratogens . . . environment
D.
Proteins . . . bloodstream

Why was mendel's work not accepted at the time? o a. his results were false. o b. he did not repeat his experiments. o c. he did not have any data. o d. his results were surprising,

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from