2031. MAB program stands for

A. Man and biotechnology
B. Material and biology
C. Man and Biology
D. Man and Biosphere
✅ The correct answer is option D.
Man and the Biosphere Programme (MAB) is an intergovernmental scientific programme, launched in 1971 by UNESCO, that aims to establish a scientific basis for the improvement of relationships between people and their environments.

2032. Any unfavorable alteration of the environment may be called as

A. eutrophication
B. environmental pollution
C. biomagnigication
D. bioaccumulation
✅ The correct answer is option B.
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.

2037. The sun emits its greatest intensity of radiation in:

A. The visible portion of the spectrum
B. The infrared portion of the spectrum
C. The ultraviolet portion of the spectrum
D. The x-ray portion of the spectrum
✅ The correct answer is option A.
The sun emits it greatest intensity of radiation in: the visible region of the spectrum. The temperature of a rising parcel: cools as its molecules expand in less dense air.

2038. Birth rate is called

A. mortality
B. vital index
C. natality
D. viability
✅ The correct answer is option C.
The ratio of total live births to total population in a specified community or area over a specified period of time. The birthrate is often expressed as the number of live births per 1,000 of the population per year. Also called natality.

2040. The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the:

A. Higher air temperature in the Gulf States
B. Lower air temperature in Southern California
C. Higher water temperature in the Gulf of Mexico
D. Low relative humidity of the air over the Pacific Ocean
✅ The correct answer is option C.
The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the higher water temperature in the Gulf of Mexico.