If you were studying the ecology of a marsh community, what components would you need to consider?
What will be an ideal response?
A correct answer would include the various components of all living things in that ecosystem, including members of both microscopic and macroscopic organisms, the interactions between these organisms, and the interplay between organisms and the abiotic environment.
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Which of the following would not be used in a vaccine?
a. live virus b. bacterial antigen c. killed or inactivated virus d. either bacterial antigen or killed or inactivated virus
A relatively ________ lake is characterized by an abundance of nutrients, abundant algal growth, and shallow light penetration
Fill in the blank(s) with correct word
Which of the following is classified as a spongiform encephalopathy?
A) botulism B) variant Creutzfeldt-Jakob disease C) Hansen's disease D) arboviral encephalitis E) African sleeping sickness
Neoplasms are described as malignant when _____.
A) they produce the pigment melanin and significantly darken the area of the tumor B) they remain confined or encapsulated within a well-defined region C) they stimulate growth of blood vessels directly into the tumor D) they can be eradicated only by surgery, chemotherapy, or radiation E) tumor cells break away from the primary tumor and establish secondary colonies