The first serious attack on the idea of spontaneous generation<span> was made in 1668 by Francesco Redi, an Italian physician and poet. At that time, it was widely held that maggots arose </span>spontaneously<span> in rotting meat. Redi believed that maggots developed from eggs laid by flies.</span>
Most amphibians have an aquatic larval form with +Gills+and a terrestrial adult form with +Lungs+.
If secondary consumers are removed from the ecosystem, an ecological imbalance may be created. Secondary consumers are generally feed on other animals (primary consumers) Thus, on removing secondary consumers from food chain, there will be increase in population of primary consumers as a result all the grass and other vegetation will be eaten by the primary consumers. This will leads to desertification and eventually all the top consumers will also eliminated from the ecosystem.
Cell divison occurs at the end of an eaukaryotic cell's cycle.
1. The first step is mitosis,, a multi-phase process in which the nucleus of the cell divides. During mitosis, the nuclear membrane breaks down and later reforms. The chromosomes are also sorted and separated to ensure that each daughter cell receives a diploid number of chromosomes. In humans, that number of chromosomes is 46 (23 pairs). Because the DNA has replicated prior to mitosis that unique where that result from mitosis are genetically identical.
2. The second major step is cytokinesis. As in prokaryotic cells, the cytoplasm must divide. Cytokinesis is the division of the cytoplasm in eukaryotic cells, resulting in two genetically identical daughter cells.
So at the end of the eukaryotic cell cyclke yoou will be left with two daughter cells that are genetically identical to each other and to their parent cell. Hope you found this helpful ;)
