Which of the following structures is the site of gas exchange in the human lung?

A) Bronchioles B) Larynx C) Bronchi D) Trachea E) Alveoli


E

Biology & Microbiology

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Birds generate a lot of heat, especially during flight. Yet the adipose tissue under their skin and the feathers atop their skin make it difficult to eliminate excess heat across the skin

Which of the following alternatives can absorb body heat and eliminate it from the bird most effectively? A) air in the air sacs B) lymph in the lymphatic vessels C) blood in the vessels D) blood in the heart E) urine in the bladder

Biology & Microbiology

Describe the primary components of an atom

What will be an ideal response?

Biology & Microbiology

The figure illustrates

a. a pyramid of energy. b. a pyramid of biomass. c. a grazing food web. d. a detrital food web. e. the recycling of energy in an ecosystem

Biology & Microbiology

Members of what group are multicellular producers?

A. Animals B. Protists C. Fungi D. Plants E. Bacteria

Biology & Microbiology