A climax community is characterized by
a stable composition of plant and animal species
rapid changes in the composition of species
constant changes in appearance of the habitat
different species occurring at different times
gradual change in animal population
Correct answer is A
No explanation has been provided for this answer.
The expansion of solids can be considered a disadvantage in the
fire alarm system
thermostat
riveting of steel plates
balance wheel of a watch
fitting of wheels on rims.
Correct answer is D
No explanation has been provided for this answer.
increases for a while and then decreases
decreases for a while and then increases
increases gradually
decreases gradually
remains the same
Correct answer is C
No explanation has been provided for this answer.
Which of the following is not an adaptation of plants or animals to desert environments?
Well developed tap root system
Small leaves with thick Epidermis
Stems with spike-like leaves
uric acid as metabolic waste in some animals
Broad leaves for storage
Correct answer is E
No explanation has been provided for this answer.
How far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2 ms-2?
32m
24m
16m
1.2m
5m
Correct answer is C
S = vt + 1/2 at2 = 0 + 1/2 x 2 x 42 = 16m