Describe how the endoplasmic reticulum mitochondria and golgi apparatus are structurally similar

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Which identifies the main purpose of biological taxonomy?

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