If a scientist recorded the size, birth rate, and age structure of an owl population over the last 20 years, he is most likely a(n):
A. demographist.
B. embryologist.
C. botanist.
D. mathematician.
E. evolutionary biologist.
A
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Symptoms of infectious mononucleosis include. Select all apply:
a. sore throat b. bloody stool c.fatigue d. jaundice e. fever
A tissue type that is composed of fibroblasts and collagen fibers, provides support for intestinal muscles and forms
capsules around kidneys is known as ____ tissue.
a. dense, irregular connective b. dense, regular connective c. cartilage d. stratified epithelium e. simple squamous epithelium
Dominant species tend to be more abundant than other species because they
A) prey upon or parasitize other species. B) outcompete other species. C) are preyed upon less than other species. D) reproduce more rapidly than other species.
Which of the following dilution schemes results in a 1:100,000 dilution? (Choose all that apply)
> Step 1: transfer 1ml from the original sample to flask A with 99ml diluent; step 2: transfer 1ml from flask A to flask B with 99ml diluent; step 3: plate a 0.1ml sample from flask B > Step 1: transfer 1ml from the original sample to flask A with 9ml diluent; step 2: transfer 1ml from flask A to flask B with 9ml diluent; step 3: plate a 1ml sample from flask B > Step 1: transfer 0.1ml from the original sample to flask A with 9.9ml diluent; step 2: transfer 0.1ml from flask A to flask B with 9.9ml diluent; step 3: plate a 0.1ml sample from flask B > Step 1: transfer 10ml from the original sample to flask A with 90ml diluent; step 2: transfer 10ml from flask A to flask B with 90ml diluent; step 3: plate a 1ml sample from flask B