Biology, 06.03.2021 03:30 SkinnestXOXO
In the film, Paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all only mussels. In the control plots, the number and diversity of species were basically unchanged. Which statement(s) best explain(s) these results?
a. Keystone species are critical to the diversity and stability of an ecosystem.
b. When a predator is removed, the prey of that predator always increases, and species not eaten by the predator always decrease.
c. The disappearance of producers from an ecosystem can cause the number of predators to increase
Answers: 2
Biology, 22.06.2019 17:30
Adding more tributaries to a local river basin can have what effect?
Answers: 3
Biology, 22.06.2019 17:50
To take a whiff of your favorite food, you use both? a. motor nerves and your digestive system b. sensory nerves and your immune system c. motor nerves and your skeletal system d. sensory nerves and your respiratory system
Answers: 2
In the film, Paine recalls that a year after the starfish had been removed, the number of species de...
Spanish, 21.12.2019 07:31
Mathematics, 21.12.2019 07:31
Biology, 21.12.2019 07:31
Social Studies, 21.12.2019 07:31
English, 21.12.2019 07:31
Mathematics, 21.12.2019 07:31
Mathematics, 21.12.2019 07:31
English, 21.12.2019 07:31
Mathematics, 21.12.2019 07:31
Mathematics, 21.12.2019 07:31