All cells come from preexisting cells. A cell divides its DNA in a process known as mitosis and its cytoplasmic contents in a process known as cytokinesis, producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. Cells that can divide without becoming a specific cell type (i.e. skin cells) are known as stem cells. When stem cells undergo mitosis and divide, they produce two cells. One cell remains a stem cell and the other is a partially specialized cell known as a progenitor cell. Cells undergo a process of specialization or determination called differentiation to become neurons, muscle cells, or skin cells. Stem cells are the source of all different cell types.
An estuary ecosystem has been damaged by pollution and sediment runoff. What types of factors should be considered when designing a plan for the ecosystem's recovery? (2 points)
Both abiotic and biotic factors, from the estuary and the surrounding area
A housing development is situated near a river that flows into a bay. Which of the following is an abiotic factor in the river that would directly affect the marine ecosystem in the bay? (2 points)
The types of sediment moving down river