A tar-like patch found in the upper North Atlantic supra-intertidal usually is:
a. a lichen.
b. a cyanobacteria.
c. sea hair.
d. a sponge.
e. a seaweed.
B
You might also like to view...
Given a population that contains genetic variation, what is the correct sequence of the following events under the influence of natural selection?
1. Well-adapted individuals leave more offspring than do poorly adapted individuals. 2. A change occurs in the environment. 3. Genetic frequencies within the population change. 4. Poorly adapted individuals have decreased survivorship. A) 2 ? 4 ? 1 ? 3 B) 4 ? 2 ? 1 ? 3 C) 4 ? 1 ? 2 ? 3 D) 4 ? 2 ? 3 ? 1 E) 2 ? 4 ? 3 ? 1
What would be an easy way to determine if a skull is a mammal's skull?
A. Look for air sacs in the skull. B. Examine the teeth. C. Look for the remains of the tympanum. D. Measure the brain case volume.
Eukaryotic cilia and flagella arise from which of the following cellular components?
a. nucleus b. Golgi complex c. centrioles d. chromosomes e. nucleolus
A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with
A. temperatures above 37°C. B. high salt. C. carbon dioxide. D. high acidity. E. oxygen.