All science begins with ________, which is the first step in the process known as the scientific method

Fill in the blank(s) with correct word


observation

Biology & Microbiology

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Mollusks are distinguished from other animal groups by the presence of (select all that apply)

A. a mantle that plays a role in breathing and excretion. B. a toothlike radula in some. C. a segmented body with a hydrostatic skeleton. D. ecdysis. E. none of these

Biology & Microbiology

Sometimes plant species that grow in the same area cannot interbreed because their physical shape has become specialized for different types of pollinators. What type of reproductive isolation is occurring?

a. mechanical b. ecological c. behavioral d. gamete incompatibility e. temporal

Biology & Microbiology

How many types of histone proteins are there?

A. 4 B. 5 C. 7 D. 8

Biology & Microbiology

Which of the following stimulates spermatogenesis?

a. Gonadotropin-releasing hormone b. Testosterone c. Progesterone d. Luteinizing hormone

Biology & Microbiology