What is the relationship between an ecosystem and a community?
What will be an ideal response?
A community consists of all the interacting populations within an ecosystem. An ecosystem includes the abiotic environment as well as all plant and animal communities.
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To avoid losing the ability to pull water from the soil as a result of cavitation, plants __________. (Select all correct answer options.)
A. have parallel water conduits B. generate high tensile forces in the xylem C. cannot occupy certain habitats D. close stomata when the tensile forces in the xylem are very large
Information concerning a chemical product's health hazards, toxicity, and disposal procedures is:
a. found in the manufacturer's material safety data sheets (MSDS). b. found on the product label. c. proprietary information and only released at the manufacturer's discretion. d. obtained through the manufacturer's tech-nical support division; acquiring access to that information is the responsibility of the laboratory worker.
A bird flashing white patches underneath its wings is an example of what type of communication?
A) Sound B) Chemical C) Passive visual D) Physical contact E) Active visual
The kidneys are important homeostatic organs, contributing to maintenance of all of the following except
A. blood pressure. B. blood volume. C. blood pH. D. destruction of worn-out red blood cells. E. ion concentration of extracellular fluids.