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Hi, need to submit a 500 words essay on the topic LC 50 and LD 50.Download file to see previous pages... LD 50, also known as lethal dose 50 %, refers to the amount of a substance, in solid or liquid
Hi, need to submit a 500 words essay on the topic LC 50 and LD 50.
Download file to see previous pages...LD 50, also known as lethal dose 50 %, refers to the amount of a substance, in solid or liquid form, which is able to kill 50 % percent of a target population in a single dose. The dosage defines either single or multiple applications according to predetermined prescriptions. The two terms defines lethal administration of a substance in a habitat (Fingas and Charles, p. 191).angelo, social
How oil can enter an organism
Oil can enter into plants and animals’ bodies through different ways such as “physical exposure, ingestion, absorption and through food chain” (Fingas and Charles, p. 193). Entrance by physical exposure involves the organisms’ direct contact with oil, such as movement in the oil that can then enter the organisms’ bodies through their external openings. Ingestion is however the case of a direct consumption of oil. Absorption of oil occurs through transfer of volatile components through membranes of plants and some animals while exposure through food chain involves multiple transfers through ingestion (Fingas and Charles, p. 193).
Meaning of avoidance
Avoidance is one of organisms’ responses to calamities, such as oil spill, by restraining from affected areas. Aquatic animal are for example able to move to deeper levels to avoid spilled oil on water surface.
Effects of oil spill on the aquatic environment
Oil spill have different degree of effects on plants and animal depending on species and age.
