Why is a pyramid of numbers for a forest sometimes narrow at the bottom?
a. Energy decreases as it passes through each trophic level.
b. Energy increases as it passes through each trophic level.
c. Individual producers are small and very numerous.
d. Herbivorous insects vastly outnumber large producers.
e. Large producers vastly outnumber insects.
ANSWER: d
You might also like to view...
Humans may contact psittacosis by
A. handling infected birds. B. handling infected birds and the dried excreta of birds. C. consuming undercooked chicken. D. inhaling excreta of dried birds.
The hierarchy of endocrine glands that control the release of sex steroid hormones is ____
a. hypothalamus, posterior pituitary, gonads b. hypothalamus, anterior pituitary, gonads c. anterior pituitary, hypothalamus, gonads d. posterior pituitary, hypothalamus, gonads e. anterior pituitary, posterior pituitary, gonads
For a complex trait that is observed less frequently in a given sex in a given family, the recurrence risk for this trait is
____________________ for future children of that sex.Fill in the blank(s) with the appropriate word(s).
Refer to the accompanying figure with the lateral line organs of fishes. The structures indicated by label 3 are:a
hair cells. b. cupula. c. stereocilia. d. sensory neurons. e. supporting cells.