Biology, 03.08.2019 20:00, ionmjnm9701
It contains two arteries and one vein entwined and enclosed by a protective, gristly substance called wharton's jelly. blood constantly pulsates through it with every beat of your baby's heart. it is thea) villi. eliminateb) placenta. c) myometrium. d) umbilical cord
Answers: 2
Biology, 22.06.2019 06:30, dtilton2003
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.
Answers: 3
Biology, 22.06.2019 12:50, cindy14772
The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above
Answers: 1
It contains two arteries and one vein entwined and enclosed by a protective, gristly substance calle...
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