Jellyfish do not have a heart, true stomach, brain, or any other major organ. As a result, what else do jellyfish also lack?
A) cells
B) tissues
C) organ systems
D) cell organelles

PLEASE HELP!!

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures