Environmental Science - Study Mode

[#746] Which book written by Rachel Carson resulted in banning DDT in USA?
Correct Answer

(A) Silent spring

Explanation

Solution: Mocked for Being a 'Woman Studying Genetics,' How Rachel Carson Got DDT Banned. Considered one of Carson's most exceptional and groundbreaking books that marked a new public awareness about the use of chemical pesticides, especially DDT, Silent Spring was published on September 27, 1962.

[#747] Any unfavorable alteration of the environment may be called as
Correct Answer

(B) environmental pollution

Explanation

Solution: Environmental pollution is the unfavorable alteration of our surroundings, wholly or largely as a byproduct of man's actions, through direct or indirect effects of the changes in the energy pattern, radiation levels, and chemical and physical constitution and abundance of organisms.

[#748] Energy resources derived from natural organic materials are called
Correct Answer

(B) fossil fuels

Explanation

Solution: Energy resources derived from natural organic materials are called fossil fuels.

[#749] Total amount of living material at the various trophic levels of a food chain is depicted by pyramids of
Correct Answer

(C) biomass

Explanation

Solution: Pyramid of biomass is the graphical representation of total amount of living material at each trophic level of a food chain. Pyramid of numbers represent the number of individuals in each trophic level of a food chain. Pyramid of energy represents the amount of energy at each trophic level of a food chain.

[#750] Which group of vertebrates comprises the highest number of endangered species?
Correct Answer

(A) Mammals

Explanation

Solution: Mammals have 177 endangered species among vertebrates which represents 3.8% of all the species.