Answer: Option [A]The correct answer is Iron. The final essential elements are used in small quantities by the plant, but nevertheless are necessary for plant survival. These micronutrients include iron (Fe), boron (B), copper (Cu), chlorine (Cl), Manganese (Mn), molybdenum (Mo), zinc (Zn), cobalt (Co), and nickel (Ni).
Answer: Option [B]The correct answer is Carnivores. A carnivore is an organism that eats mostly meat, or the flesh of animals. Sometimes carnivores are called predators.
Answer: Option [D]The correct answer is Duckweed. Duckweed is autotrophic, so the plant uses photosynthesis to get it's nutrients.
Answer: Option [B]The correct answer is Destruction of habitat. Destruction of habitat is the most important factor responsible for decline in biodiversity. The disbalance in biodiversity taking place is just because of habitat fragmentation which results in loss of endangered animal and plant species.
Answer: Option [B]The correct answer is 1975. CITES is a multilateral treaty to protect endangered plants and animals from the threats of international trade. The convention was opened for signature in 1973 and CITES entered into force on 1 July 1975.