Which of the following correctly describes how positive and negative feedback mechanisms are similar? Choose 1
А
Both feedback mechanisms move a system further from its starting point
B
Both feedback mechanisms act to reverse changes in a system.
Both feedback mechanisms amplify changes to the set point of a system.
Both feedback mechanisms occur in response to stimuli.

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

Aboy with an extra x chromosome probably has which of the following syndromes?

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?