A- valve replacement
b- stents
x- heart transplant
Mitosis is a kind of cell division that produces 2 daughter cells that is genetically identical to both the other daughter and the parent cell.
By the word genetically identical, it means that they have the same number of chromosomes.
This process starts by a parent cell doubling their chromosomes, then, it divides, and therefore each daughter cells receive the original number of chromosomes.
Therefore, the answer to this question is 2 cells, 12 chromosomes each.
The answer is; D
Carbon dioxide and methane are potent greenhouse gases. They cause heating of the lower atmosphere, by trapping sunlight, that results to climate change. Due to the higher melting and boiling temperatures of phosphorus, it is rare that it occurs as gas in room temperatures. Phosphorus, therefore, does not pose a great threat of climate change.
Answer:
Oxygen is a colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.
Sustainability refers to how a system remains biodiverse and productive over long periods of time. Succession is a series of predictable changes that occur in a community over time. After a fire, volcano, or other disaster, succession enables an ecosystem to recover.