Which of these is a limiting factor with respect to human population size?
emigration
high standard of living
immigration
improved medicare
natality
Correct answer is A
No explanation has been provided for this answer.
An example of a conditioned reflex is
blinking
shout of exclamation
knee jerk
riding a bicycle
twitching facial muscles
Correct answer is D
No explanation has been provided for this answer.
Which of these traits shows discontinuous variation ?
ability to roll the tongue
hair colour
height of stem
girth
weight of organism
Correct answer is A
No explanation has been provided for this answer.
An instrument of measuring wind speed is called
an anemometer
a barometer
a hygrometer
a speedometer
a thermometer
Correct answer is A
No explanation has been provided for this answer.
The group of microorganisms that plays a vital role in the baking industry is
algae
bacteria
fungi
protozoa
viruses
Correct answer is C
No explanation has been provided for this answer.