Answer: Chemical spills.
A pollution is a phenomena which disturbs the natural composition of the environmental factors such as air, water and soil. A pollutant is a component which disturbs the original quality of the environmental factors. 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 when sprayed on the plants kill the insects, when dissolved in water body kill 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.
Answer Hola! my name is marissa and im here to help !
Explanation:
sinanthropus means "man or peking-man" while chimpanzee is a species of ape
Metaphase11 is the phase shown in the daigram
In the three domain system, the Eukarya includes organisms from more than one kingdom.
Answer:
d) short amino acid chains, NAG, NAM, and some lipid proteins
Explanation:
Bacterial cell walls are made up of a rigid layer that is responsible for the resistance of the cell wall. This layer is called Peptidoglycan.
The basic structure of peptidoglycan is:
- A long chain of sugar derivatives, <u>N-acetylglucosamine (NAG) </u>and <u>N-acetylmuramic acid (NAM)</u>. These two sugars are linked together by glycosidic bonds. Although these links are strong and make up the structural backbone, they are not sufficient to give the wall rigidity.
- The amino acids (<u>L-alanine, D-alanine, D-glutamic, and Lysin</u>) play an important role as peptide bridges that cross-braced the chains, joining the N-acetylmuramic molecules (NAM) together, giving greater rigidity to the structure.
Lipid proteins embedded in the wall with structure functions can also be found in the cell wall.