An increase in air pressure in the lungs is due to the
increase in the volume of the thoracic cavity
upward movement of the ribs
relaxation of the diaphragm
contraction of the intercostal muscles
Correct answer is C
No explanation has been provided for this answer.
The product of excretion common to the mammalian kidney, lung, and skin is
mineral salt
carbon (IV) oxide
water
urea
Correct answer is C
No explanation has been provided for this answer.
Night-blindness results from a deficiency of
vitamin E
Vitamin A
Vitamin K
Vitamin C
Correct answer is B
No explanation has been provided for this answer.
An evidence of a common ancestor for fishes, amphibians, reptiles, birds, and mammals is the
possession of wings by birds and bats
cold-bloodedness of fishes, amphibians and reptile
presence of gill clefts in vertebrate embryos
possession of scale by fish and reptiles
Correct answer is C
No explanation has been provided for this answer.
The only caste in the termite colony that can feed themselves are the
reproductives
workers
nymphs
soldiers
Correct answer is B
No explanation has been provided for this answer.