An ecological succession often leads to
an increase in species diversity
decrease in species diversity
an unstable community
the dispersal of species
Correct answer is A
No explanation has been provided for this answer.
r = p + q
r > p + q
q = r - p
r < p + q
Correct answer is D
No explanation has been provided for this answer.
Serum differs from blood plasma because
contains blood cells and fibrinogen
contains soluble food and mineral salt
lacks the blood protein and fibrinogen
lacks blood cells and albumin
Correct answer is C
No explanation has been provided for this answer.
The chamber of the mammalian heart with the thickest wall is the
right ventricle
left auricle
right auricle
left ventricle
Correct answer is D
No explanation has been provided for this answer.
The greatest amount of energy will be obtained by the oxidation of 100kg of?
meat
butter
sugar
biscuits
Correct answer is B
One gram of carbohydrate provides 16kJ of energy. One gram of fat provides 37kJ.
Therefore, fats in food contribute double the energy than the equivalent amounts provided by sugar.