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Animal cell:organelles: nucleus, ribosomes, mitochondria, cytoplasm and cell membrane size: Most are 5 μm – 100 μmPlant cell: organelles: nucleus, ribosomes, mitochondria, cytoplasm ,cell membrane, chloro...

Species change over time by a process called natural selection. This is commonly associated with Darwin, as he wrote about it in his book "On the origin of species". Evolution (the change of a s...

Eutrophication occurs when mineral ions from the soil such as nitrates are leached (washed away by the rain) and they run into rivers, lakes and ponds. This increase in nutrients into the water causes an ...

The key difference between these two processes is that diffusion is the movement of particles from a region of high concentration to a region of low concentration, whereas in active transport the molecule...

Nucleus - In eukaryotes the nucleus contains most of the DNA and also directs chemical processes of the cell. Prokaryotes do not have nuclei.Mitochondria - Most eukaryotic cells have mitochondria which ar...