The nutrient that is in short supply for many people of the world is
A. protein.
B. calories.
C. fat.
D. water.
A. protein.
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Land plants are believed to have evolved from
(a) mosses. (b) ferns. (c) charophytes. (d) fungi.
As a naturalist, you are responsible for training volunteers in the identification of the types of amphibians. The volunteers will use this information to correctly describe the animals to school groups that will visit your nature center. The training documentation for the volunteers lists important characteristics of the different groups of amphibian, but you notice that one of the items on the list is incorrect. Indicate which description is not correct.
A. Frogs and toads have external fertilization whereas salamanders and caecilians have internal fertilization. B. Frogs, toads, and most salamanders have four legs whereas caecilians are legless. C. Frogs and toads lay eggs whereas some caecilians lay eggs and others give birth to live young. D. Salamanders and caecilians have external tails whereas frogs and toads do not. E. Adult frogs, toads, and salamanders are predators of insects and other small animals whereas caecilians are herbivores.
Which of the following is true of the human microbiome?
A) High blood sugar following weight-loss surgery is partly due to a changed gut microbiome. B) An altered microbiome hastens starvation in malnourished children. C) Antibiotics do not alter the gut microbiome. D) The microbiome consists primarily of cells that belong to the human body.
Cryptococcal meningitis is highly communicable among humans.
Answer the following statement true (T) or false (F)