Smog is produced by using which of the energy sources:
a) Wind
b) Water
c) Fossils fuels
d) Sun
The organ that is made up of air carrying tubes and tiny sacs:
a) Brain
b) Lungs
c) Stomach
d) Diaphragm
Gas is exchanged in the alveoli by the process of:
a) Facilitated diffusion
b) Simple diffusion
c) Filtration
d) Active transport
Explanation: Simple diffusion: A substance tends to move from a region of high concentration in diffusion to a region of lower concentration until equilibrium is reached. The total movement of molecules in and out of the more concentrated region and into the lesser concentrated one is till the concentration is equal. Such a process does not require any input of energy. A concentration gradient itself is a form of stored energy, which is utilized as concentrations tend to equalize.
Pedagogy is the study of.
a) Curriculum development
b) Classroom management
c) Individual differences
d) Teaching method
c) fossils fuels
by at 2025-02-28 14:30:34