B. DDT decomposes.
C. DDT was genetically engineered.
D. DDT bioaccumulates.
Answer: D. DDT bioaccumulates
Bioaccumulation is the accumulation of substances or compounds such as pesticides, fertilizers or other chemicals in the body of the organisms. These substances or compounds are toxic and remain undigested in the body of the organisms are transferred subsequently in a food chain, when one organism is consumed by another organism. The highest trophic level is most effected because of the concentration of the toxic substance is the maximum.
DDT (dichlorodiphenyltrichloroethane) is a colorless, odorless and tasteless crystalline chemical compound. It is used as a pesticide to kill pests in agricultural field. DDT is highly toxic chemical compound. It remains undigested in the body of the organism and transferred in a food chain when one organism is consumed by another organism. The effect of DDT is magnified several times in the top most trophic level in the food chain due to bioaccumulation.
Corruption and fraud can have devastating effects on a person and the institution that he or she is working for. When you combine these two elements a lot of people can get hurt financially and emotionally. It’s bad enough that you falsify certain documents for a transaction but it gets worse when you abuse your power by doing cruel and unjust things. If caught, a person could be convicted and sent to jail and the institution that he worked would be shut down leaving honest employees unemployed.
b. heredity
c. conception
d. pollination
Answer:
B) heredity
Explanation:
I need it urgently
Answer: Pulmonary veins
The pulmonary veins bring oxygen-rich blood to the left atrium.
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B. chlorophyll
C. food molecules
D. damaged organelles
The central vacuole is a large membrane-bound organelle which is present in all plant and fungal cells and some animals with main function to maintain turgor pressure in the cell. The vacuole contains mostly water, but also ions, salts, waste products, nutrients, and sometimes pigment molecules. According this, in addition to water, fold molecules are most likely to be found in a plant central vacuole. Correct answer: C