Asex chromosome found in males; influencing the degree of maleness

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

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated