Which of the following is a primary consumer?
a. tiger
b. elephant
c. eagle
d. hyena
e. snake
B
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Arthropod exoskeletons are composed primarily of
A. chitin. B. calcium carbonate. C. collagen. D. cartilage. E. sclerotin.
____ strips an area of vegetation and soil, creating an ecological dead zone
a. Biological magnification b. Renewable energy c. Ecological restoration d. Ground mining e. Surface mining
In poultry, the genes for rose comb (R) and pea comb (P) produce walnut whenever they occur
together (R__ P__); single-combed individuals have the homozygous condition for both genes (rr pp). (a) Give the F1 and F2 phenotypic results of a cross of a pure-breeding rose comb (RR pp) with a pure-breeding pea comb (rr PP). (b) Give the phenotypic results of a cross of Rr Pp ? rr Pp. (c) Give the phenotypic results of a cross of RR Pp ? rr Pp. (d) Give the phenotypic results of a cross of Rr pp ? rr Pp. (e) Give the phenotypic results of a cross of Rr Pp ? rr pp. What will be an ideal response?
The enzyme ________ can bind both carbon dioxide and oxygen
Fill in the blank(s) with correct word