Which of the following is a primary consumer?

a. tiger
b. elephant
c. eagle
d. hyena
e. snake


B

Biology & Microbiology

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Arthropod exoskeletons are composed primarily of

A. chitin. B. calcium carbonate. C. collagen. D. cartilage. E. sclerotin.

Biology & Microbiology

____ 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

Biology & Microbiology

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?

Biology & Microbiology

The enzyme ________ can bind both carbon dioxide and oxygen

Fill in the blank(s) with correct word

Biology & Microbiology