An animal cell is a type of cell that dominates most of the tissue cells in animals. Animal cells are different from plant cells because they don't have cell walls and chloroplasts, which are relevant to plant cells.
The simple molecules find each other and combine to make a more complex molecules in a process known as anabolism.During this process more complex molecule are synthesized from simpler molecules including macromolecules from monomer in a process known as condensation
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A pollution disturbs the natural composition of the environmental factors such as air, water and soil. Chemical spills is a pollutant which consist of toxic or non-toxic chemical being added up by factories, water transportation and agricultural irrigation, pesticide or herbicides to soil, water and air. The chemical spill, which is sprayed on the plants kill the insects, when dissolved in water body kills the aquatic animals. The effect is seen mostly in higher trophic level organisms because of biomagnification. Biomagnification is a phenomena in which an undigestable toxic substance enters into the food chain when one organism being eaten up by other. At the top higher level of the food chain accumulates toxic substances from chemical spill and results in death and extinction of species. Therefore, causes loss of biodiversity from the ecosystem.
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Food, animals get food from plants, and when the animals die, their body decomposes, and the nutrients are used by plants.
