The interaction of a community of organisms with its abiotic environment constitutes
niche
a food chain
an ecosystem
a mirohabitat
Correct answer is C
No explanation has been provided for this answer.
Which of the following is a feature of the population pyramid of a developing country?
long lifespan
low birth rate
low death rate
short lifespan
Correct answer is D
Features of developing countries:
An example of a filter -feeding animal is
shark
butterfly
whale
mosquito
Correct answer is C
Filter feeding is a method of aquatic feeding in which the animal takes in many small pieces of prey at one time.
16.7%
17.6%
26.7%
16.2%
Correct answer is A
Mass of Soil = 101.5 - 80.5 = 21.0g
Mass of humus = (99.0 - 95.5)g = 3.5g
% of humus = \(\frac{3.5}{21.0} \times \frac{100}{1}}
= 16.7%
In nature, plants and animals are perpetually engaged in mutualism because
they are rivals
all animals rely on food produced by plants
they utilize respiratory wastes of each other
they are neighbours
Correct answer is D
No explanation has been provided for this answer.