Which of the following best describes a marine habitat? A large body of water
that has no distinctive colour or taste
with high salt concentrations
with few suspended materials
with no water weeds
that doesn't sustain animal life
Correct answer is B
No explanation has been provided for this answer.
The process where microorganisms convert atmospheric nitrogen into nitrogenous compounds is
known as
nitrogen cycle
nitrogen fixation
denitrification
putrefaction
decomposition
Correct answer is B
No explanation has been provided for this answer.
0.10N
0.25N
0.30N
0.40N
0.50N
Correct answer is D
Weight of object = mg
= \(\rho vg\) = 2.5 x 10\(^3\) x 2 x 10\(^{-5}\) x 10 = 0.5N;
Upthrust = weight of displaced fluid = \(\rho_{water} vg\)
= \(\frac{1.0 \times 10^3 \times 2 \times 10^{-5} \times 10}{2}\) = 0.1N
∴Reading = 0.5 – 0.1 = 0.4N
Which of the following is not a courtship behaviour exhibited by animals?
Pairing
Display
Seasonal migration
Hibernation
Territorialism
Correct answer is D
No explanation has been provided for this answer.
25s
7.1s
10.0s
50.0s
100.0s
Correct answer is C
S = ut + 1/2at2
25 = 0 + 1/2 x 0.5t2
T = 10s